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7-Zip User Manual - Ubuntu System settings and software installation

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1. t Test integrity of archive command Tests archive files Example 7z t archive zip doc r tests doc files in archive archive zip Notes 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Switches that can be used with this command ai Include archives an Disable parsing of archive_name ax Exclude archives i Include p Set Password r Recurse x Exclude 39 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip u Update u Update command Update older files in the archive and add files that are not already in the archive Note The current version of 7 Zip cannot change an archive which was created with the solid option switched on To update a 7z archive you must create and update that archive only in non solid mode ms off switch Example 7z u archive zip doc updates doc files to archive archive zip Notes 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Switches that can be used with this command i Include m Method p Set Password r Recurse
2. 7z a archive 7z slp a iso compresses a iso file with Large Pages mode switched on 64 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip slt Show technical information slt Show technical information switch Sets technical mode for List command Syntax slt Example 7z l slt archive 7z shows detailed technical information for the files in archive 7z Commands that can be used with this switch List 65 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip ssc Set Sensitive Case mode ssc Set Sensitive Case mode switch Sets sensitive case mode for file names Syntax scs Switch Description SSC Set case sensitive mode It s default for Posix Linux systems SSC Set case insensitive mode It s default for Windows systems Example 7z a archive 7z A txt ssc r compresses all A txt files from current directory and all it s subdirectories That command doesn t compress a txt files Commands that can be used with this switch a Add d Delete e Extract List t Test u Update x Extract with full paths 66 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip ssw Compress files open for writing ssw Compress files open for writing switch Compresses files open for writing by another applications If this switch is not set 7 zip doesn t include such fil
3. F E Update specified files in the archive that are older than the selected reshen existing files AA disk files Replace specified files only if added files are newer Always add Synchronize files those files which are not present in the archive Delete from archive those files which are not present on the disk Specifies compression options Option Meaning Create self extracting archive You can use this option only for 7z Create SFX archive archives Look to sfx Create SFX archive switch description for more details about SFX modules Compress shared files Compress files open for writing by another applications Encryption Specifies password and encryption options Enter password Specify passord here Reenter password Reenter passord here for verification Show Password Shows Password Encryption method Specifies the encryption method For 7z format it can be only AES 256 For ZIP format you can select ZipCrypto or AES 256 Use ZipCrypto if you want to get archive compatible with most of the ZIP archivers AES 256 provides stronger encryption but now AES 256 is supported only by 7 Zip WinZip and some other ZIP archivers Encry pt file names Enables or disables archive header encryption including file name encryption 26 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Extract Dialog Box Extract Dialog Box Allows you to specify options for extracting files from archive How to run
4. sfx create SFX si use Stdln so use StdOut ssw Compress shared files t Type of archive u Update w Working Dir x Exclude See also Commands a Add d Delete Switches u Update 40 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip x eXtract with full paths x Extract with full paths command Extracts files from an archive with their full paths in the current directory or in an output directory if specified See the e Extract command description for more deatails Examples 7z x archive zip extracts all files from the archive archive zip to the current directory 7z x archive zip oc soft cpp r extracts all cpp files from the archive archive zip to c soft folder Notes 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Switches that can be used with this command ai Include archives an Disable parsing of archive_name ao Overwrite mode ax Exclude archives i Include o Set Output Directory p Set Password r Recurse sO use StdOut t Type of archive x Exclude y Assume Yes on all queries See also Commands e Extract 41 75 http www softforall com Utilities FileCompression 7 Z
5. txt files except temp files Commands that can be used with this switch a Add d Delete e Extract List t Test u Update x Extract with full paths See also Switches r Recurse i Include 74175 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip y Assume Yes on all queries y assume Yes on all queries switch Disables most of the normal user queries during 7 Zip execution You can use this switch to suppress overwrite queries in the e Extract and x Extract with full paths commands Syntax y Examples 7Z X src zip y extracts all files from src zip archive All overwrite queries will be suppressed and files on disk with same filenames as in archive will be overwritten Commands that can be used with this switch e Extract x Extract with full paths See also Switches ao Overwrite mode 75 75
6. LIE ANI RAJD EOR im on Sets solid mode Enables or disables compression filters for lof on On executable files hc off on on Enables or disables archive header compressing he off on off Enables or disables archive header encryption b C1Hs S1H C2Hs S2 Sets binding beetwen coders N MethodiD paramt param2I LZMA Boj es STRON AR Ae mt off on N on Sets multithreading mode tc off on off Stores file creation timestamps x 0 1 3 51719 Sets level of compression 50 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip m Set Compression Method Level Method Dictionary FastBytes MatchFinder Filter Description 0 Copy No compression 1 LZMA 64KB 32 HC4 BCJ Fastest compressing 3 LZMA 1MB 32 HC4 BCJ Fast compressing 5 LZMA 16MB 32 BT4 BCJ Normal compressing 7 LZMA 32MB 64 BT4 BCJ Maximum compressing 9 LZMA 64MB 64 BT4 BCJ2 Ultra compressing s off on e N f N b N k N m N g Enables or disables solid mode The default mode is s on In solid mode files are grouped together Usually compressing in solid mode improves the compression ratio e Use a separate solid block for each new file extension N f Set the limit for number of files in one solid block N b N k N m N g Set a limit for the total size of a solid block in bytes These are the default limits for the solid block size Compression Solid block size Level Store 0B Fastest 1
7. MB 1 4 MB s 6 MB PPMD narmal 24MB 1 2 MB s 26 MB maximum 64 MB 1 0 MB s 66 MB ultra 192 MB 0 9 MB s 194 MB fast 15 MB aa o ue Deflate 32 KB 40 MB s 2 MB maximum 1 5 MB s AMB ultra 0 4 MB s normal 3 MB s BZip2 maximum 900 KB 1 2 MB s 16 MB s 20 MB 7 MB ultra 0 4 MB s Dictionary size Specifies Dictionary size for compression method Usually a higher Dictionary size gives a higher compression ratio But compressing can be slower and it can require more memory Memory RAM usage for LZMA compressing is about 11 times more than dictionary size Memory usage for LZMA decompressing is close to value of dictionary size Memory usage for PPMd compressing and decompressing is almost equal to dictionary size Word size Specifies the length of words which will be used to find identical sequences of bytes for compression Usually for LZMA and Deflate big Word size gives a little bit better compression ratio and slower compression process A big Word size parameter can significantly increase compression ratio for files which contain long identical sequences of bytes For PPMa the Word size strongly affects both compression ratio and compression decompression speed Solid Block size Specifies the size of a solid block You can also disable solid mode In solid mode all files will be compressed as continuous data blocks Usually compressing to a solid archive improves the compression ratio You can use this option only for 7z archiv
8. archive to output stream and then redirects that stream to Doc txt file 7z a dummy tgzip so Doc txt gt archive gz compresses the Doc txt file to the 7 Zip standard output stream and writes that stream to archive gz file Commands that can be used with this switch a Add e Extract u Update x Extract with full paths 63 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip slp Set Large Pages mode Slp Set Large Pages mode switch Sets Large Pages mode Syntax slp Switch Description slp Enables Large Pages mode slp Disables Large Pages mode This option is default for all commands Large Pages mode increases the speed of compression However there is a pause at the start of compression while 7 Zip allocates the large pages in memory If 7 Zip can t allocate large pages it allocates usual small pages Also the Windows Task Manager doesn t show the real memory usage of the program if 7 Zip uses large pages This feature works only on Windows 2003 XP x64 Also it requires administrator s rights for your system The recommended size of RAM for this feature is 1 GB or more To install this feature you must run the 7 Zip File Manager at least once close it and then reboot the system Your system can hang for several seconds at compressing starting if you use slp mode So it s not recommended to use slp mode to compress small data sets less than 100 MB Example
9. available mf MF_ID Sets Match Finder for LZMA Default method is bt4 Algorithms from hc group don t provide a good compression ratio but they often work pretty fast in combination with fast mode a 0 Memory requirements depend on dictionary size parameter d in table below MF_ID Memory Description bt2 d 9 5 4MB_ Binary Tree with 2 bytes hashing bt3 d 11 5 4 MB Binary Tree with 3 bytes hashing bt4 d 11 5 4 MB Binary Tree with 4 bytes hashing hc4 d 7 5 4MB_ Hash Chain with 4 bytes hashing Note Your operation system also needs some amount of physical memory for internal purposes So keep at least 32MB of physical memory unused fb N Sets number of fast bytes for LZMA It can be in the range from 5 to 273 The default value is 32 for normal mode and 64 for maximum and ultra modes Usually a big number gives a little bit better compression ratio and slower compression process mc N Sets number of cycles passes for match finder It can be in range from 0 to 1000000000 Default value is 16 number_of_fast_bytes 2 for BT match finders and 8 number_of_fast_bytes 4 for HC4 match finder If you specify mc 0 LZMA will use default value Usually a big number gives a little bit better compression ratio and slower compression process For example mf HC4 and mc 10000 can provide almost the same compression ratio as mf BT4 Ic N Sets the number of literal context bits high bits of previous literal It can be i
10. for s1 and s2 output streams of BCJ2 7z a t7z archive 7z txt m0 PPMd adds txt files to archive archive 7z using PPMd method Commands that can be used with this switch a Add d Delete u Update See also Switches t set Type of archive 54 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip O Set Output directory o set Output directory switch Specifies a destination directory where files are to be extracted This switch can be used only with extraction commands Syntax o dir path dir_path This is the destination directory path It s not required to end with a backslash Example 7z x archive zip oc Doc extracts all files from the archive zip archive to the c Doc directory Ta X zip o extracts all zip archives to subfolders with names of these archives Commands that can be used with this switch e Extract x Extract with full paths 55 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip p Set Password p set Password switch Specifies password Syntax p password password Specifies password Examples 7z a archive 7z psecret mhe txt compresses txt files to archive 7z using password secret Also it encrypts archive headers mhe switch so filenames will be encrypted 7z x archive zip psecret extracts all files from archive zip using password secret Com
11. specified 7 Zip uses UTF 8 encoding only for file names that contain symbols unsupported by local code page x 0 1 3 5 7 9 Sets level of compression x 0 means Copy mode no compression Deflate Deflate64 settings Level NumFastBytes NumPasses Description 1 Fastest 3 32 1 Fast 5 Normal 7 64 3 Maximum 9 128 10 Ultra x 1 and x 3 with Deflate method set fast mode for compression BZip2 settings Level Dictionary NumPasses Description 1 100000 Fastest 3 500000 1 Fast 5 Normal 7 900000 2 Maximum 9 7 Ultra fb NumFastBytes Sets the number of fast bytes for the Deflate Deflate64 encoder It can be in the range from 3 to 258 257 for Deflate64 Usually a big number gives a little bit better compression ratio and a slower compression process Alarge fast bytes parameter can significantly increase the compression ratio for files which contain long identical sequences of bytes pass NumPasses Sets number of passes for Deflate encoder It can be in the range from 1 to 15 for Deflate and 49 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip m Set Compression Method from 1 to 10 for BZip2 Usually a big number gives a little bit better compression ratio and a slower compression process d Size b k m Sets the Dictionary size for BZip2 You must specify the size in bytes kilobytes or megabytes The maximum value for the Dictionary size is 900000b If you do not specify an
12. target archive If you clear this check box 7 Zip always will use the specified folder settings mode always 7 Zip uses temporary archive files for all update operations So for speed reasons it is recommended that you select the System temp folder option and select Use for removable drives only check box 28 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Command Line Version Command Line Version User s Guide 7z exe is the command line version of 7 Zip 7Z exe uses 7z dll from the 7 Zip package 7z dll is used by the 7 Zip File Manager also 7za exe a alone is a standalone version of 7 Zip 7za exe supports only 7z Izma cab zip gzip bzip2 Z and tar formats 7za exe doesn t use external modules e Command Line syntax e Exit Codes e Commands e Switches 29 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 Zi Syntax p y Command Line Syntax 7z lt command gt lt switch gt lt base archive _ name gt lt arguments gt lt arguments gt lt switch gt lt wildcard gt lt filename gt lt list_file gt lt switch gt lt switch symbol gt lt switch characters gt lt option gt lt switch symbol gt lt list_file gt filename Expressions in square brackets between and are optional Expressions in curly braces and Y mean that instead of that Expression including braces
13. this dialog box There are two ways to run this dialog e To extract all files from an archive a In Windows Explorer or in 7 Zip right click the archive file b Point to 7 Zip and then click Extract files e To extract specified files from an archive opened in the browsing window a Open archive with 7 Zip b Select items to extract c Right click items and then click Copy To Parameters Extract to Provides a space for you to specify an output folder You can click button to display Browse for folder dialog box that you can use to locate output folder Path mode Specify extract mode Value Meaning Full pathnames Extract files with full pathnames Current pathnames Extract files with all relative paths No pathnmes Extract files without folder paths Overwrite mode Specify overwrite mode for files that already present on disk Value Meaning pen pelore Ask before overwriting existing files overwrite Overwrite f dto 2 A without prompt Overwrite existing files without prompt ie existing Skip extracting of existing files Aitorename Rename extracted files if a file with the same name already exists For example file document txt will be renamed to document _1 txt Files Specifies files for extracting Value Meaning Selected files Extract only files that are selected in the main window All files Extract all files Password Specifies a password for encrypted archives 27 75 http www softfo
14. to register 7 Zip See also Register 7 Zip for more details how to register 7 Zip 21 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Plugins Plugins The 7 Zip File Manager can use internal and external plugins Currently 7 Zip uses the following plugins 7 Zip Plugin for manipulating archives 22 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip 7 Zip 7 Zip Plugin 7 Zip is a plugin for manipulating archives It makes all archive files look like usual folders in File Manager Most of the operations with compressed files can be initiated by right clicking on files in the File Manager or in Windows Explorer and selecting the appropriate command from a menu Using 7 Zip Opening archive There are two ways to open an archive file e f you have the file type associated with 7 Zip then you can open the file with 7 Zip by double clicking the file or by right clicking and selecting the Open command e You can right click the archive file point to 7 Zip and then click the Open command item Extracting archive There are two ways to extract files from an archive e To extract all files from an archive right click the archive file point to 7 Zip and then click the Extract files command item e To extract specific files from an archive open it by Open archive with 7 Zip select the items to extract and run the Copy To command Extract Dialo
15. 10 Display the shortcut menu for the selected items RightCtrl 0 Alt 0 qe Open folder bookmark RightCtrl 9 Alt 9 Shift RightCtrl 0 Shift Alt 0 a Creates folder bookmark Shift RightCtrl 9 Shift Alt 9 Alt F1 Edit the Folder Address on left panel Alt F2 Edit the Folder Address on right panel Ctrl Grey Adjust optimal column width for items Alt Up Open same folder in other panel f Open current folder in other panel Keyboard Shortcuts Key Normal Ctrl Alt Shift Tab Switch panel F1 Help Left Path F2 Rename Right Path F3 View Sort by Name F4 Edit Sort by Type Exit Create File F5 Copy Sort by Date F6 Move Sort by Size F7 Create Folder Unsorted 16 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Menu Items and Shortcut Keys F9 1 2 Panels F10 Menu F12 Shortcut Menu Folders History 0 9 R Folder Bookmark Folder Bookmark A Select All N Create File R Refresh Z Comment Backspace Up One Level Enter Open Insert Select Item Delete Delete Item Page Down Open Inside Page Up Up One Level Up Left Right Open root Grey Open root Grey SelectAll Grey Select Adjust columns Grey Deselect Properties Open outside Open same folder Open current folder Open current folder Select by Type Select All Deselect by Type Deselect All 17 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Options Dialog Box Options Dialog Box You can change m
16. 6 MB Fast 128 MB Normal 2 GB Maximum 4 GB Ultra 4 GB Limitation of the solid block size usually decreases compression ratio but gives the following advantages e Decreases losses in case of future archive damage e Decreases extraction time of a group of files or just one file so long as the group doesn t contain the entire archive The current version of 7 Zip doesn t support updating of solid archives if it requires repacking solid blocks Example s 100f10m set solid mode with 100 files amp 10 MB limits per one solid block f off on Enables or disables compression filters for executable files dll exe ocx sfx sys It uses BCJ2 filter in Ultra mode and BCJ filter in other modes The default mode is f on hc off on Enables or disables archive header compressing The default mode is hc on If archive header compressing is enabled some parts of archive header will be compressed with LZMA method he off on Enables or disables archive header encryption The default mode is he off N Sets order of methods It is used also to associate parameters with methods Numbers must begin from 0 Methods that have smaller numbers will be used before others b C1 s S1 C2 s S2 Binds output stream S1 in coder C1 with input stream S2 in coder C2 If stream number is not specified stream with number 0 will be used 51 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip
17. 7 Zip User Manual 7 Zip File Manager File Edit View Favorites Tools Help a bay gt xX Add Extract Test Copy Move Delete Info 154 C Program Files 7 Zip1 Name Size Modified OB 2004 12 13 23 48 rar OB 2004 12 13 23 48 Formats OB 2004 12 13 23 48 Lang OB 2004 12 13 23 48 EP 7 2ip chm 67K 2004 11 17 20 35 7 2ip dll 131K 2004 11 16 19 03 23 7 zipn dll 122K 2004 11 16 19 03 Pere 120K 2004 11 18 09 41 gt 1 object s selected DB 0B 2004 12 13 23 48 htto www softforall com Utilities FileCompression 7 Zip 09050120 htm Table of Contents T Zip Start Page spa pete eset a ce aed EEEn 1 General Information e votcontrastaanianldenladde dd lille paiaat 2 Supported formas ec 3 AZ NO ME eno coat oe alate DAA dc doe Se DUO occ I 5 O aa 7 Prequently ASked Questions and ade 8 TOA O O ROSA ROMO A A SOAO TS COMER ISTE SA 9 Register Po 10 TANK ae Sh 11 File Manager ci 14 Menu Items and Shortcut KeyS 0 ec 15 OptiOns Dialog BOX aaae ie ent ona datienhenent hl entnentdtieniaaeni di enilnenidstienteaenidtientlvaenitsentvaesat dieadtan 18 Bench Mate AAA AAA anata sh dei nitive SAS a EA Srna Sha EAA 20 PAD OUTS DIAIOG BOX gsc ic ee an ees caer a NS e adela 21 PNT Sateen A O O CO OU tect aac A 22 A cece rascal 23 Add to Archive Dialog BOX ii E E E nn 24 Extract Dialog Boxe AAA one 27 7 Zip Plugin Options Hini e a a E A mann anine eet 28 Socia ONIN hh Da iD A 29 RSE Ds ater E E A ITE NITO TONTERIAS
18. 7z listfile txt scsWIN compresses files from listfile txt list that contains list of files in default character set of Windows Commands that can be used with this switch a Add u Update 58 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip seml Send archive by email seml Send archive by email switch Sends an archive by e mail Syntax seml Causes the archive to be deleted after attaching a copy of it to the email message Example 7z a archive 7z seml a txt compresses the a txt file and sends it in archive 7z by email Commands that can be used with this switch a Add u Update 59 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip sfx Create SFX archive sfx Create SFX archive switch Creates self extracting archive Syntax sfix SFX Module SFX_Module Specifies the SFX module that will be combined with the archive This module must be placed in the same directory as the 7z exe If SFX_Module is not assigned 7 Zip will use standard console SFX module 7zCon sfx SFX_Module Description 7z sf Windows version 7zCon sfx Console version 1ZS sfx Windows version for installers 7zSD sfx Windows version for installers uses MSVCRT dll All SFX modules are uncompressed You can use UPX program http upx sourceforge net to compresss such modules After compressing by the UPX program
19. ITESO NENE 30 R o e e E E A A a a eh oe 32 GOMMMANGS EAA AAA OA AAAA AOA OAOA AO AOAO AA OAOA OA 33 O er ee reer 34 a eee nen re renee AE IEE nr O Ace 35 Delete E En 36 SS AN 37 A eaten sta end 38 A AI t acre dtl te E ce PRON ase eh ct St E eee Ea aoe 39 UNBE o Maem kre i Ra Bee AR RRS EER ea 40 X eXtract With TUN PAtNS Poni tit rd td ti aatdbeetoce alissontsboSl 41 SMWICNES tata 42 Sto0p SWitches ParSiDO ici ARA 43 ai Include archive filenames switch ccicicicicicininianinininnaninininnnnn rn corno 44 an Disable parsing of archive_name switch oie cccccccececscccecstececssseeecscscescesecsseusssenssevsusssevesstsusasavevensesasaseveneuees 45 SI IE MOUS A ANO 46 ax Exclude archive filenames SWitCh oie cecccccecscscsscecseecscssceceneceusesevsvscsuessavevevsusasavenessusasavevetssesavevessesasasevenseees 47 Include tienes A EA EN tne Sl ta is St Sa te ae alee 48 m Set Gompression Method Gis aa A A A AI Sd ESTEE td tee do lane 49 0 Set Output directory co ise a cegaaieieeisig leaden litle eed eee yE 55 AS A TNA 56 r Recurse subdirectories ici recae 57 ses Seteharset Tor iSt MES zri ekna ie oe a e ae e hs 58 seml Send archive by email cinc 59 six Create SFX archive ia a A S A a Ea 60 si Read data from SHIN e 62 250 Writedata to Std Out A A a a a i a 63 Slp Set Large Pages mode nc ecaaiaie 64 slt Show technical information cnica 65 SSC Set Sensitive Case mode ninia 66
20. Select by Type Alt Grey Select all items with the same extension as current item Deselect by Type Alt Grey View Menu Item Shortcut Large Icons Ctrl 1 Small Icons Ctrl 2 List Ctrl 3 Details Ctrl 4 Name Ctrl F3 Type Ctrl F4 Date Ctrl F5 Size Ctrl F6 Unsorted Ctrl F7 Flat View 2 Panels F9 Toolbars Open Root Folder Deselect all items with the same extension as current item Description Displays items by using large icons Displays items by using small icons Displays items in a list Displays items in a list with detailed information about each item Sort items by Name Sort items by Type Sort items by Date Sort items by Size Do not sort items Switch Flat view mode for list of files Switch On Off second panel Menu items for toolbars handling Open root computer folder 15 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Menu Items and Shortcut Keys Up One Level Backspace Open the folder one level up Folders History AlttF12 Open folders history Refresh Ctrl R Refresh items list Options Menu Item Shortcut Description Options Open Options dialog box Favorites Menu Item Shortcut Description Add folder to Favorites as Adds folder to favorities Help Menu Item Shortcut Description Contents F41 Opens 7 Zip Help About 7 Zip Opens About dialog box Miscellaneous commands Shortcut Description Tab Switch between panels Insert Select Deselect current item Shift F
21. Wei Dai for SHA 256 code and Crypto Library Jeff Gilchrist for compressing tests Brian Gladman for AES code in previous versions of 7 Zip Szymon Grabowski for some ideas Microsoft Corporation for CAB WIM formats descriptions and WiX Windows Installer XML Nullsoft Inc and NSIS team for NSIS Nullsoft Scriptable Install System Robert Martinez 7 Zip Logo Markus Oberhumer and Laszlo Molnar for UPX program Alexander Ratushnyak for compressing tests Eugene Roshal for RAR format Matthew Russotto for CHM CAB format description Julian Seward for BZip2 format Eugene Shelwien for some ideas and algorithms Dmitry Shkarin for PPMd algorithm Yoshioka Tsuneo for TAR32 program Vadim Yoockin for compressing tests Bulat Ziganshin for some ideas John Michael Williams for help file corrections Apple Inc for HFS format description vu1tur DMG2IMG for hints to DMG format Yutaka Sawada for hints to ZIP Strong Encryption format Localization team Afrikaans Petri Jooste Albanian Mikel Hasko Arabic Mohammad Deeb Awadh AAI Ghaamdi Ahmad Gharbeia Armenian Gevorg Papikyan Asturian Dinamiteru Azeri F rhad Basque Inigo Salvador Azurmendi Belarusian Kirill Gulyakevitch Drive DRKA Breton KAD Korvigellou An Drouizig Bulgarian Chavv icobgr Catalan Josep Casals Gaizka Boleko Marc Folch Chinese Simplified Modern Tiger kaZek Hutu Li Junior Spirit Chinese Tradition
22. Zip doesn t support Zip multivolume archives LZH 7 Zip supports LZH archives only for listing browsing and decompressing 7 Zip supports Ih0 Ih4 Ih5 In6 and Ih7 methods 41 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip 7z format 7z Format 7z is a new archive format providing a high compression ratio The main features of the 7z format e Open architecture e High compression ratio e Strong AES 256 encryption e Ability to use any compression conversion or encryption method e Supports files with sizes up to 16000000000 GB e Unicode file names e Solid compression e Archive headers compression 7z has an open architecture so it can support any new compression methods The following methods currently are integrated into 7z Method Description LZMA Improved and optimized version of LZ77 algorithm PPMD Dmitry Shkarin s PPMdH with small changes BCJ Converter for 32 bit x86 executables BCJ2 Converter for 32 bit x86 executables BZip2 Standard BWT algorithm Deflate Standard LZ77 based algorithm LZMA is the default and general compression method of 7z format The main features of the LZMA method e High compression ratio e Variable dictionary size up to 4 GB e Compression speed about 1 MB s on 2 GHz CPU e Decompression speed about 10 20 MB s on 2 GHz CPU e Small memory requirement for decompression depends from dictionary size e Small code size for decompression ab
23. al Leon Tseng sec2 11 75 7 zip http www softforall com Utilities FileCompression 7 Zip 09050120 htm Thanks Croatian Alan Simek Hasan Osmanagic Stjepan Treger Czech Jaromir Veber Milan Hruby Michal Molhanec Jiri Malak Danish Jakob Schmidt Kian Andersen Jorgen Rasmussen Dutch Bert van Velsen Jeroen van der Weijde Harm Hilvers Jeroen Tulp Esperanto Dmitri Gabinski Estonian Kaupo Suviste Extremaduran Miguel Angel Farsi Edris Naderan Mehdi Farhadi Finnish Ari Ryynanen Jarko P Juhani Valtasalmi T Sakkara French Nicolas Sierro Philippe Berthault Friulian Andrea Decorte Frisian Berend Ytsma Galician Xose Calvo Georgian Dimitri Gogelia German Soeren Finster JAK Software Joachim Henke Greek Vasileios Karakoidas Jacaranda Bill Vasilis Kosmidis Hebrew Gal Brill Jonathan Lahav Peter G Hungarian Jozsef Tamas Herczeg Icelandic bjossi Ido Zoom Indonesian M Rofiq Setiawan Frans Liando Italian Leandro Spagnol TJL73 Japanese Komuro Mick 2chBBS software Stepanushkin Dmitry Korean bzlmage ZannyLim Hyeongil Kim kurt Sawyer Dong yoon Han Kurdish Rizyoye Xerzi Kurdish Sorani Ara Bakhtiar Latvian Armands Radzushka Lithuanian Marius Navickas Macedonian Gabriel Stojanoski Malay Khairul Ridhwan Omar Marathi Subodh Gaikwad Mongolian Bayar Norwegian Bokmal Christoffer Andersen Kjetil Hjartnes Robert Gronning Norwegian N
24. all files from the current directory which differ from files in exist 7z archive Note The current version of 7 Zip cannot change an archive created with the solid option switched on To update a 7z archive you must create and update the archive in non solid mode ms off switch 70 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip u Update options Commands that can be used with this switch a Add d Delete u Update 71 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip v Create Volumes v Create Volumes switch Specifies volume sizes Syntax v Size b k m g Size b k m g Specifies volume size in Bytes Kilobytes 1 Kilobyte 1024 bytes Megabytes 1 Megabyte 1024 Kilobytes or Gigabytes 1 Gigabyte 1024 Megabytes if you specify only Size 7 zip will treat it as bytes It s possible to specify several v switches NOTE Please don t use volumes and don t copy volumes before finishing archiving 7 Zip can change any volume including first volume at the end of archiving operation Examples 7z aa 7z txt v10k v15k v2m creates multivolume a 7z archive First volume will be 10 KB second will be 15 KB and all others will be 2 MB Commands that can be used with this switch a Add 72175 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip w Set Working director
25. any of the settings that affect the 7 Zip File Manager in the Options dialog box To access this dialog box select Options from the Tools menu The options dialog box contains the following pages e System Page e Plugins Page e Editor Page e Settings Page e Language Page System Page Allows you to specify the behavior of 7 Zip in the filing system Associate 7 Zip with Lists the file name extensions and associated plugins that are currently registered with 7 Zip If file name extension is checked 7 Zip will be used to open file with that extension In any case you can always open all archives with 7 Zip via your right click context menu Plugins Page Allows you to specify settings for the installed plugins Plugins Lists the plugins For modifying settings of plugins you must select the plugin and press the Options button Editor Page Allows you to specify settings for the editor Editor Specifies the path to the editor Settings Page Allows you to specify some settings Show item Shows item in file list Show real file icons Shows real file icons in file list If this option is enabled listing updates can be slower Show system menu Shows a system context sub menu in the File menu Full row select When an item is selected the item and all its subitems are highlighted Show grid lines Displays gridlines around items and subitems Alternative selection mode 18 75 http www softforall com Utilities FileCompressio
26. bes the menu items and keyboard shortcut Options Dialog Box Describes what settings you can change that affect the 7 Zip File Manager Benchmark Describes a 7 Zip Benchmark for measuring CPU performance About Dialog Box Provides information about 7 Zip Plugins Describes plugins for the 7 Zip File Manager 14 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Menu Items and Shortcut Keys Menu Items Note Grey refers to the numeric keypad File Menu item Shortcut Description System Submenu with menu commands from system shell Open Enter Open current item Open Inside CtrltPgDn Open current item as folder inside 7 Zip Open Outside Shift Enter Open current item in new window Edit F4 Open selected item with editor Rename F2 Rename selected item Copy To F5 Copy selected items Move To F6 Move selected items Delete Delete Delete selected items Split file Split file to parts Combine files Combine files to one file Comment Ctrl Z Set comment for file Calculate checksum Calculates CRC checksum for files Create Folder F7 Create new folder Create File ShifttF4 Creates new file Exit Alt F4 Closes the program Edit Menu Item Shortcut Description Select All Shift Grey Select all items Deselect All Shift Grey Select all items Invert Selection Grey Select Deselect all items Select Grey Select specified items Deselect Grey Deselect specified items
27. card Switches that can be used with this command i Include m Method p Set Password r Recurse u Update w Working Dir x Exclude See also Commands a Add u Update Switches u Update 36 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip e Extract e Extract command Extracts files from an archive to the current directory or to the output directory The output directory can be specified by o Set Output Directory switch This command copies all extracted files to one directory If you want extract files with full paths you must use x Extract with full paths command 7 Zip will prompt the user before overwriting existing files unless the user specifies the y Assume Yes on all queries switch If the user gives a no answer 7 Zip will prompt for the file to be extracted to a new filename Then a no answer skips that file or yes prompts for new filename 7 Zip accepts the following responses Answer Abbr Action Yes y No n Always a Assume YES for ALL subsequent queries of the same class Skip s Assume NO for ALL subsequent queries of the same class Quit q Quit the program Abbreviated responses are allowed Examples 7z e archive zip extracts all files from archive archive zip to the current directory 7z e archive zip oc soft cpp r extracts all cpp files from archive archive zip to c soft folder Notes 7 Zip doesn t us
28. cards Multiple include switches are supported Syntax i lt resurse type gt lt tile rer gt srecurse type gt r 4 lt file ref gt listfile wildcard Parameters lt recurse_type gt Specifies how wildcards and file names in this switch must be used If this option is not given recursion will be not used For more details see specification of the r Recurse switch lt recurse type gt r 0 lt file_ref gt Specifies filenames and wildcards or list file that specify processed files lt file ref gt f listfile wildcard Option Description listfile Specifies name of list file See List file description wildcard Specifies wildcard or filename Examples 7z t an air 7z tests 7z archives in current directory and all it s subdirectories Commands that can be used with this switch a Add d Delete e Extract List t Test u Update x Extract with full paths See also Switches ax Exclude archives an Disable parsing of archive_name 44 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip an Disable parsing of archive_name switch an Disable parsing of archive_name switch Disables parsing of the archive_name field on the command line This switch must be used with the ai Include archives switch If you use a file list for your archives you specify it with the ai switch so you need to
29. disable parsing of archive_name field from command line Syntax zan Examples 7z t an ai 7z ax a 7z tests all 7z archives except a 7z archives Commands that can be used with this switch e Extract List t Test x Extract with full paths See also Switches ai Include archives ax Exclude archives 45 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip ao Overwrite mode ao Overwrite mode switch Specifies the overwrite mode during extraction to overwrite files already present on disk Syntax aofa s t lu Switch Description aoa Overwrite All existing files without prompt aos Skip extracting of existing files aou aUto rename extracting file for example name txt will be renamed to name_1 txt aot auto rename existing file for example name txt will be renamed to name_1 txt Examples 7z x test zip aoa extracts all files from test zip archive and overwrites existing files without any prompt Commands that can be used with this switch e Extract x Extract with full paths See also Switches y assume Yes on all queries 46 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip ax Exclude archive filenames switch ax Exclude archive filenames switch Specifies archives to be excluded from the operation Multiple exclude archive switches are supported Syntax ax lt recu
30. ed with the solid option switched on To update a 7z archive you must create and update the archive in non solid mode ms off switch What about support for ACE archives Support for ACE can be implemented if the source code of that format is made available and if the source code license will allow using that code 8 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip License License 7 Zip Copyright C 1999 2007 Igor Pavlov Licenses for files are e 7z dll GNU LGPL unRAR restriction e All other files GNU LGPL The GNU LGPL unRAR restriction means that you must follow both GNU LGPL rules and unRAR restriction rules Note You can use 7 Zip on any computer including a computer in a commercial organization You don t need to register or pay for 7 Zip Read file License txt for full information about license 9 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Register 7 Zip Register 7 Zip 7 Zip is free software However you can support development of 7 Zip by registering You can find all information about registering at http www 7 zip org register html Thank you very much in advance 10 75 7 zip http www softforall com Utilities FileCompression 7 Zip 09050120 htm Thanks Thanks would like to thank myspace from sf net for porting to Unix Linux testing bug fixing and more ARJ Software for ARJ format
31. erage CPU thread Avr shows averages for different dictionary sizes Tot shows averages of the compression and decompression ratings Compression speed and rating strongly depend on memory RAM latency Decompression speed and rating strongly depend on the integer performance of the CPU For example the Intel Pentium 4 has big branch misprediction penalty which is an effect of its long pipeline and pretty slow multiply and shift operations So the Pentium 4 has pretty low decompressing ratings You can run a CRC calculation benchmark by specifying mm crc That test shows the speed of CRC calculation in MB s The first column shows the size of the block The next column shows the speed of CRC calculation for one thread The other columns are results for multi threaded CRC calculation Examples Tz b runs benchmarking 7z b mmtl md26 runs benchmarking with one thread and 64 MB dictionary 7z b 30 runs benchmarking with default settings for 30 iterations 35 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip d Delete d Delete command Deletes files from archive Example 7z d archive zip bak r deletes bak files from archive archive zip Notes 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wild
32. es With the current version of 7z you can update existing archives only when solid mode is switched off and the existing archive is non solid Number of CPU threads Specifies the number of threads for compressing A big number of threads can speed up compression speed on Multi Processor systems Sometimes it can increase speed even on single core CPU Split to volumes Size b k m g Specifies volume sizes in Bytes Kilobytes 1 Kilobyte 1024 bytes Megabytes 1 Megabyte 1024 Kilobytes or Gigabytes 1 Gigabyte 1024 Megabytes If you specify only Size 7 zip will treat it as bytes It s possible to specify several values Example 10k 15k 2m The first volume will be 10 KB the second will be 15 KB and all others will be 2 MB Parameters 25 75 7 zip http www softforall com Utilities FileCompression 7 Zip 09050120 htm Add to Archive Dialog Box Allows you to specify parameters for compression See the m Method switch description for more details Omit the m prefix as in m switch when using this dialog box Examples 0 PPMd uses PPMd method for compressing files O bcj2 1 1zma d23 2 1zma 3 lzma b0 1 b0s1 2 b0s2 3 uses BCJ2 filter for x86 executables and LZMA Update mode Specifies update mode Options Value Meaning Add and replace files Add all specified files to the archive Update and add files Update older files in the archive and add files that are new to the archive
33. es the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Switches that can be used with this command ai Include archives an Disable parsing of archive _name ao Overwrite mode ax Exclude archives i Include O Set Output Directory p Set Password r Recurse so use StdOut t Type of archive x Exclude y Assume Yes on all queries See also Commands x Extract with full paths 37 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip List I List contents of archive command Lists contents of archive Examples 7z 1 archive zip lists all files from archive archive zip Notes 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Switches that can be used with this command ai Include archives an Disable parsing of archive_name ax Exclude archives i Include slt Show technical information p Set Password r Recurse t Type of archive x Exclude 38 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip t Test
34. es to archive Syntax SSW Example 7Z a archive 7z ssw txt compresses all txt files in current folder including files open for writing by another applications Commands that can be used with this switch a Add u Update 67 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip t Set Type of archive t set Type of archive switch Specifies the type of archive Syntax t archive type archive_type Specifies the type of archive It can be 7z split zip gzip bzip2 tar 7z format is the default If t archive_type switch is not specified 7 Zip uses extension of archive to detect the type of archive Note gzip or bzip2 formats support only one file per archive If you want to compress more than one file to these formats create a tar archive first and then compress it with your selected format Example 7z a tzip archive zip txt adds all txt files from current directory to zip archive archive zip 7z t t7z split archive 7z 001 tests all files in archive 7z 001 It also checks that archive is multivolume 7z archive 7z x tiso archive iso extracts files from archive iso open as ISO archive 7z x tudf archive iso extracts files from archive iso open as UDF archive Commands that can be used with this switch a Add d Delete e Extract List t Test u Update x Extract with full paths 68 75 http www softforall com Utilities F
35. g will appear Testing archive To test an archive right click the archive file point to 7 Zip and then click the Test archive command item Creating and updating files in an archive For creating or updating an archive file right click the file s or folder s you want to compress point to 7 Zip and then click the Add to archive command item Add to Archive Dialog will appear 23 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Add to Archive Dialog Box Add to Archive Dialog Box Allows you to specify options for creating or updating an archive How to call this dialog box 1 In Windows Explorer or in 7 Zip right click the file s or folder s you want to compress 2 Point to 7 Zip and then click the Add to archive command item Parameters Archive Provides a space for you to specify a destination archive name You can click button to display Open dialog box that you can use to locate archive Archive format Specifies a format of created archive Some formats gzip and bzip2 do not support compressing more the one file per archive Compression level Specifies compression level There are 6 levels of compression Value Meaning Store Files will be copied to archive without compression Fastest Fastest compression Fast Fast compression Normal Compression with balanced settings Can give a higher compression ratio than Normal level But it can be slower a
36. he file on disk Same Same Can not be detected what file is newer times are 2 the same sizes are different lt action gt Specifies the action for a given lt state gt lt action gt 0 1 2 3 For each state you can specify one of the three variants of actions lt action gt Description 0 Ignore file don t create item in new archive for this file 1 Copy file copy from old archive to new 69 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip u Update options 2 Compress compress file from disk to new archive Create Anti item item that will delete file or directory during extracting This feature is supported only in 7z format Remarks Any update command such as a Add d Delete u Update can be assigned in these terms The following table shows action sets for update commands command lt state gt p q r x y z w d Delete 1000000 a Add 1122222 u Update 1121212 Freshen 1101212 Synchronize 1021212 If you don t specify a new archive name option then all options will refer to the main archive the archive assigned on the command line after the 7z command If you specify new_archive_name option then 7 Zip also will create a new archive with the specified name and all options will refer to that new archive Multiple update switches are supported 7 Zip can create any number of new archives during one operation By defaul
37. http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Commands Command Line Commands The command is the first non switch argument on the command line Command names are not case sensitive See also Command Line Syntax for more details about using the command line Commands quick reference a h b Benchmark 7 a pete sera 7 est 33 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip a Add a Add command Adds files to archive Examples 7z a archivel zip subdir adds all files and subfolders from folder subdir to archive archive1 zip The filenames in archive will contain subdir prefix 7z a archive2 zip subdir adds all files and subfolders from folder subdir to archive archive2 zip The filenames in archive will not contain subdir prefix cd D c dirl Tz a c archive3 zip dir2 dir3 The filenames in archive c archive3 zip will contain dir2 dir3 prefix but they will not contain c dir1 prefix 7z a Files 7z txt r adds all txt files from current folder and its subfolders to archive Files 7z Notes 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Switches that can be used with this command i Include m Method p Set Passw
38. ileCompression 7 Zip 09050120 htm 7 zip u Update options u Update options switch Specifies how to update files in an archive and or how to create new archives Syntax u lt action_set gt new archive name lt action_set gt lt state_action gt lt state action gt etate gt lt action gt lt state gt p qI rt itxtiytsta2zatiow acti n gt 0 1 2 3 Parameters dash Disables any updates in the base archive The term base archive means the archive assigned by base_archive_name on the command line See Command line syntax for more details new_archive_name Specifies the path name of the new archive to be created All options in this switch will refer to this new archive If not assigned then all options in this switch will refer to the base archive of the command lt state gt Specifies the state of a particular file to be processed lt state gt p qlrlxlylzsl w For each unique filename there are 6 variants of state lt state gt State condition File on Disk File in Archive File exists in archive but is not matched with Exists but is not P wildcard matched q File exists in archive but doesn t exist on disk Doesn t exist Exists r File doesn t exist in archive but exists on disk Exists Doesn t exist x File in archive is newer than the file on disk Older Newer y File in archive is older than the file on disk Newer Older z File in archive is same as t
39. ion 7 Zip 09050120 htm 7 zip Supported formats Supported formats Format Compressing Decompressing Filename Extensions TZ x X TZ ZIP X X zip GZIP X X gz gzip tgz BZIP2 X X bz2 bzip2 tbz2 tbz TAR x X tar LZMA X Izma RAR X rar CAB X cab ARJ X arj Z X ztaz CPIO X cpio RPM X rpm DEB X deb LZH X Izh Iha SPLIT X 001 002 CHM X chm chw hxs ISO X iso UDF X iso COMPOUND X msi doc xls ppt WIM X wim swm DMG X dmg XAR X xar HFS X hfs NSIS X exe ZIP 7 Zip creates fully ZIP compatible archives Anyone can decompress these files by any ZIP compatible decompression utility During compression 7 Zip can use one of the following ZIP compression methods e 0 Store e 8 Deflate e 9 Deflate64 e 12 BZip2 The current version of the 7 Zip can extract any files from ZIP archive that were compressed with one of the following methods e 0 Store e 1 Shrink e 6 Implode e 8 Deflate e 9 Deflate64 e 12 BZip2 Files compressed with other ZIP compression methods can t be extracted by the current version of the 7 Zip But these supported methods are the most popular today and therefore 7 Zip can decompress most ZIP archives To extract files compressed with non supported methods you must use some other 3 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Supported formats ZIP utility 7 Zip supports the Zip64 extension of ZIP format The current version of 7
40. ip 09050120 htm 7 zip Switches Command Line Switches Syntax amp ltswitch gt lt switch symbol gt lt switch characters gt lt option gt lt switch symbol gt On the command line a switch consists of a switch specifier either a dash or a forward slash followed by the name of the switch Switch names cannot be abbreviated Some switches take an argument after the switch name No spaces or tabs are allowed within a switch specification Switch names are not case sensitive but arguments can be case sensitive Switch can be used in any place in command line See also Command Line Syntax for more details about using the command line Switch quick reference Switch Description 7 Stopswiches passing Lal Include achive flenames zo ovenriemode i Include flenames 7 Lo Set Output drecioy 42 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm zi Stop switches parsin 7 zip Stop switches p g Stop switches parsing switch Disables switch parsing after on the command line This is to allow 7 Zip to use file names that start with Syntax Examples 7z t ArchiveName 7z tests ArchiveName 7z archive 43 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip ai Include archive filenames switch ai Include archive filenames switch Specifies additional include archive filenames and wild
41. lities FileCompression 7 Zip 09050120 htm 7 zip m Set Compression Method PPMd uses the same amount of memory for compression and decompression o Size Sets the model order for PPMd The size must be in the range 2 32 The default value is 6 BCJ2 BCJ2 is a Branch converter for 32 bit x86 executables version 2 It converts some branch instructions for increasing further compression ABCJ2 encoder has one input stream and four output streams e s0 main stream It requires further compression e s1 stream for converted CALL values It requires further compression e s2 stream for converted JUMP values It requires further compression e s3 service stream It is already compressed If LZMA is used the size of the dictionary for streams s1 and s2 can be much smaller 512 KB is enough for most cases than the dictionary size for stream sO Examples 72 a tzip archive zip jpg mx0 adds jpg files to archive zip archive without compression 7z a t7z archive 7z exe dll m0 BCJ ml1 LZMA d 21 ms mmt adds exe and dll files to solid archive archive 7z using LZMA method with 2 MB dictionary and BCJ converter Compression will use multithreading optimization 7z a t7z archive 7z exe dll m0 BCJ2 m1 LZMA d23 m2 LZMA d19 m3 LZMA d19 mb0 1 mb0s1 2 mb0s2 3 adds exe and dll files to archive archive 7z using BCJ2 converter LZMA with 8 MB dictionary for main output stream s0 and LZMA with 512 KB dictionary
42. m Set Compression Method Usally coder has one input stream and one output stream In 7z some coders can have multiple input and output streams For example BCJ2 encoder has one input stream and four output streams mt off on N Sets multithread mode If you have a multiprocessor or multicore system you can get a increase with this switch 7 Zip supports multithread mode only for LZMA compression and BZip2 compression decompression If you specify N for example mt 4 7 Zip tries to use 4 threads LZMA compression uses only 2 threads N MethodID param 1 param2 paramN Sets compression method You can use any number of methods The default method is LZMA Parameters must be in one of the following forms e ParamName Param Value e ParamName Param Value if ParamValue is number and ParamName doesn t contain numbers Supported methods MethodIiD Description LZMA Algorithm based on LZ algorithm PPMd Dmitry Shkarin s PPMdH with small changes BZip2 BWT algorithm Deflate LZ Huffman Copy No compression Supported filters MethodIiD Description BCJ converter for x86 executables BCJ2 converter for x86 executables version 2 ARM converter for ARM little endian executables ARMT converter for ARM Thumb little endian executables 1464 converter for lA 64 executables PPC converter for PowerPC big endian executables SPARC converter for SPARC executables Filters increase the compressi
43. mands that can be used with this switch a Add d Delete e Extract t Test u Update x Extract with full paths 56 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip r Recurse subdirectories r Recurse subdirectories switch Specifies the method of treating wildcards and filenames on the command line Syntax r 0 Switch Description r Enable recurse subdirectories I Disable recurse subdirectories This option is default for all commands rO Enable recurse subdirectories only for wildcard names Examples 7z L archive zip doc r lists all doc files that belong to the archived root directory in the archive zip archive 7z a tzip archive zip r src cpp src h adds all cpp and h files from directory src and all it s subdirectories to the archive zip archive Commands that can be used with this switch a Add d Delete e Extract List t Test u Update x Extract with full paths See also Switches i Include x Exclude 57175 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip scs Set charset for list files scs Set charset for list files switch Sets charset for list files Syntax scs UTF 8 WIN DOS Default charset is UTF 8 UTF 8 Unicode UTF 8 character set WIN Default character set of Windows DOS Default DOS OEM character set of Windows Example 7z a archive
44. mples Tz a tzip sre zip txt ir DIR1 cpp adds to src zip archive all txt files from current directory and all cpp files from directory DIR1 and from all it s subdirectories Commands that can be used with this switch a Add d Delete e Extract List t Test u Update x Extract with full paths See also Switches r Recurse x Exclude 48 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip m Set Compression Method M Set compression Method switch Specifies the compression method Syntax Zip m lt method_parameters gt The format for this switch depends on the archive type Parameter Default Description x 01113 5 7 9 5 Sets level of compression m MethodID Deflate Sets a method Copy Deflate Deflate64 BZip2 LZMA fob NumFastBytes 32 Sets number of Fast Bytes for Deflate encoder pass NumPasses 1 Sets number of Passes for Deflate encoder d Size b k m 900000 Sets Dictionary size for BZip2 mt off on N on Sets multithreading mode Sets a encryption method ZipCrypto AES128 AES192 em EncryptionMethodID ZipCrypto AES256 Stores NTFS timestamps for files Modification time Creation tee Ptr On on time Last access time cl off on off 7 Zip always uses local code page for file names cu off on off 7 Zip uses UTF 8 for file names that contain non ASCII symbols By default if cl and cu switches are not
45. n 7 Zip 09050120 htm 7 zip Options Dialog Box If enabled File Manager keeps selection mark when you move cursor Use large memory pages If enabled 7 Zip will try to use large pages This feature allows an increase in speed of compression This may cause 7 Zip to pause when starting compression because of allocation of the large pages Also the Windows Task Manager doesn t show the real memory usage of the program if 7 Zip uses large pages This feature works only on Windows 2003 XP x64 Also you must have administrator s rights for your system Recommended size of RAM 1 GB or more To install this feature you must run 7 Zip File Manager at least once close it and reboot the system Language Page Allows you to change the default language Language Lists the available languages 19 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Benchmark Benchmark This form allows you to measure the performance of your computer There are two tests 1 Compression with LZMA method 2 Decompression with LZMA method The benchmark shows a rating in MIPS million instructions per second The rating value is calculated from the measured speed and it is normalized with results of Intel Core 2 CPU with multi threading option switched off So if you have modern CPU from Intel or AMD rating values in single thread mode must be close to real CPU frequency You can change the dictionary size to increa
46. n range from 0 to 8 Default value is 3 Sometimes Ic 4 gives gain for big files Ip N Sets the number of literal pos bits low bits of current position for literals It can be in the range from 0 to 4 The default value is 0 The Ip switch is intended for periodical data when the period is equal to 2 value where Ip value For example for 32 bit 4 bytes periodical data you can use Ip 2 Often it s better to set Ic 0 if you change Ip switch pb N Sets the number of pos bits low bits of current position It can be in the range from 0 to 4 The default value is 2 The pb switch is intended for periodical data when the period is equal 2 value where Ip value PPMd PPMd is a PPM based algorithm This algorithm is mostly based on Dmitry Shkarin s PPMdH source code PPMd provides very good compression ratio for plain text files There is no difference between compression speed and decompression speed Memory requirements for compression and decompression also are the same Parameter Default Description mem Size b k m 24 Sets size of used memory for PPMd o Size 6 Sets model order for PPMd mem Size b k m Sets the size of memory used for PPMd You must specify the size in bytes kilobytes or megabytes The maximum value is 2GB 2431 bytes The default value is 24 16MB If you do not specify any symbol from the set b k m the memory size will be calculated as 2 Size bytes 53 75 http www softforall com Uti
47. n ratio is equal to its compression ratio for ZIP format above RAR Format 7 Zip provides superior decompression speed for RAR archives For solid archives it decompresses only the minimum number of files needed For example consider a solid archive archive rar containing 100000 files created by the command rar a archive rar s100 r In this solid archive each group of 100 files is compressed as one big file To extract one file from that archive 7 Zip will decompress in memory only some files from one group As a result 7 Zip can provide the combined advantages of solid compression and high speed of decompression 7175 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Frequently Asked Questions Frequently Asked Questions FAQ Can use 7 Zip in a commercial organization Yes 7 Zip is free software You can use it on any computer You don t need to register or pay for 7 Zip Why doesn t the command line version add files that do not have any extension You probably used a wildcard 7 Zip doesn t use the Windows system wildcard parser so 7 Zip doesn t follow the archaic rule by which matches every file name 7 Zip treats as matching only a file name with an extension To process all files you must use a wildcard or just omit the wildcard entirely Why doesn t adding deleting or updating an existing archive work The current version of 7 Zip cannot change an archive creat
48. nd it can require more memory Can give a higher compression ratio than Maximum level But it can be slower and it can require more memory Maximum Ultra Compression method Specifies compression method Each archive format can have its own compression methods Method Description Default compression method of 7z format It provides high compression ratio and very LZMA fast decompression Dmitry Shkarin s PPMdH algorithm with small changes Usually it provides high PPMd N q compression ratio and high speed for text files BZip2 Standard compression method based on BWT algorithm Usually it provides high speed and pretty good compression ratio for text files Standard compression method of ZIP and GZip formats Compression ratio is not too Deflate high But it provides pretty fast compressing and decompressing Deflate method supports only 32 KB dictionary Deflate64 Modified version of Deflate algorithm with bigger dictionary 64KB Estimated 7 Zip performance and memory requirements for AMD Athlon 64 X2 3800 Method Level Dictionary Compressing Decompressing Memory for Memory for Size Speed Speed Compressing Decompressing fastest 64 KB 4 5 MB s 3 MB 3 MB fast 1MB 3 MB s 10 MB 3 MB LZMA normal 16MB 2 MB s 15 MB s 186 MB 18 MB maximum 32 MB 1 8 MB s 376 MB 34 MB 24 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Add to Archive Dialog Box ultra 64 MB 1 6 MB s 709 MB 66 MB fast 4
49. on ratio for some types of files Filters must be used with one of the compression method for example BCJ LZMA LZMA LZMA is an algorithm based on Lempel Ziv algorithm It provides very fast decompression about 10 20 times faster than compression Memory requirements for compression and decompression also are different see d Size b k m switch for details Parameter Default Description a 011 1 Sets compressing mode d Size b k m 24 Sets Dictionary size mf MF_ID bt4 Sets Match Finder fo N 32 Sets number of Fast Bytes mc N 32 Sets Number of Cycles for Match Finder Ic N 3 Sets number of Literal Context bits 0 8 lp N O Sets number of Literal Pos bits 0 4 b N 2 Set number of Pos Bits 0 4 a 0 1 Sets compression mode 0 fast 1 normal Default value is 1 d Size b k m 52 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip m Set Compression Method Sets Dictionary size for LZMA You must specify the size in bytes kilobytes or megabytes The maximum value for dictionary size is 1 GB 230 bytes Default values for LZMA are 24 16 MB in normal mode 25 32 MB in maximum mode mx 7 and 26 64 MB in ultra mode mx 9 If you do not specify any symbol from the set b k m the dictionary size will be calculated as DictionarySize 2 Size bytes For decompressing a file compressed by LZMA method with dictionary size N you need about N bytes of memory RAM
50. ord r Recurse Sfx create SFX si use Stdin SO use StdOut ssw Compress shared files t Type of archive u Update v Volumes w Working Dir x Exclude See also Commands d Delete u Update Switches u Update 34 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip b Bench b Benchmark command Measures speed of the CPU and checks RAM for errors Syntax b number of iterations mmt N md N mm Method There are two tests 1 Compressing with LZMA method 2 Decompressing with LZMA method The benchmark shows a rating in MIPS million instructions per second The rating value is calculated from the measured CPU speed and it is normalized with results of Intel Core 2 CPU with multi threading option switched off So if you have Intel Core 2 Duo rating values must be close to real CPU frequency You can change the upper dictionary size to increase memory usage by md N switch Also you can change the number of threads by mmt N switch The Dict column shows dictionary size For example 21 means 2421 2 MB The Usage column shows the percentage of time the processor is working It s normalized for a one thread load For example 180 CPU Usage for 2 threads can mean that average CPU usage is about 90 for each thread The R U column shows the rating normalized for 100 of CPU usage That column shows the performance of one av
51. out 5 KB e Supports multi threading and P4 s hyper threading The LZMA compression algorithm is very suitable for embedded applications If you want to use LZMA code you can ask for consultation custom code programming and required developer licenses at www zip org support html 7 Zip also supports encryption with the AES 256 algorithm This algorithm uses a cipher key with length of 256 bits To create the key 7 Zip uses a derivation function based on an SHA 256 hash algorithm A key derivation function produces a derived key from a text password defined by the user To increase the cost of an exhaustive search for passwords 7 Zip uses a big number of iterations to produce the cipher key from the text password Tips for selecting password length Here is an estimate of the time required for an exhaustive password search attack when the password is a random sequence of lowercase Latin letters 5 75 7 zip http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7z format We suppose that one user can check 10 passwords per second and an organization with a budget of about 1 billion can check 10 billion passwords per second We also suppose that the processor in use doubles its performance every two years so each additional Latin letter of a long password adds about 9 years to an exhaustive key search attack The result is this estimate of the time to succeed in an attack Password Length Single User A
52. p msi REINSTALL ALL REINSTALLMODE vomus InstallEnd Examples 7z a sfx a exe txt adds txt files to self extracting archive a exe using the default console SFX module 7z a sfx7z sfx a exe adds all files to self extracting archive a exe with module 7z sfx using windows version of SFX mudule Commands that can be used with this switch a Add d Delete u Update 61 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip si Read data from StdIn si read data from stdin switch Causes 7 Zip to read data from stdin standard input instead of from disc files Syntax si file name file_name Specifies a name that will be stored in the archive for the compressed data If file_name is not specified data will be stored without a name Note The current version of 7 Zip does not support reading of archives from stdin Example 7z a archive gz tgzip siDoc2 txt lt Doc txt compresses input stream from file Doc txt to archive gz archive using Doc2 txt file name Commands that can be used with this switch a Add u Update 62 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip so Write data to StdOut sO write data to stdout switch Causes 7 Zip to write output data to stdout standard output stream Syntax so Examples 7z x archive gz so gt Doc txt decompresses archive gz
53. rall com Utilities FileCompression 7 Zip 09050120 htm 7 zip 7 Zip Plugin Options 7 Zip Options Dialog Box You can change many of the settings that affect the 7 Zip Plugin in the 7 Zip Options Dialog Box To access this dialog box select Options from the Tools menu then select the Plugins Page select 7 Zip plugin and press Options The options dialog box contains the following pages e System Page e Folders Page System Page Allows you to specify behavior of 7 Zip in Windows Shell Integrate 7 Zip to shell context menu Select this check box to add 7 Zip commands to Shell Context Menu Cascaded context menu Select this check box to group 7 Zip context menu items to one 7 Zip submenu Context menu items Lists the optional context menu items If an item is checked 7 Zip will add this item to the context menu Folders Page Allows you to set the folders which 7 Zip will use for internal purposes Working folder The working folder section allows you to specify a folder which will be used for temporary archive files System temp folder 7 Zip will use the Windows temp folder Current 7 Zip will use the folder containing the target archive Specified 7 Zip will use the folder specified in the following edit control Use for removable drives only Specifies whether 7 Zip should use the specified folder settings only for removable drives for other drives 7 Zip will create temporary archives in the folder containing the
54. rse type gt lt file ref gt lt recurse type gt rl 0 lt file ref gt listfile wildcard See xi Include archive filenames switch description for information about option parameters Examples 7z t an ai 7z ax a 7z tests all 7z archives except a 7z archives Commands that can be used with this switch e Extract List t Test x Extract with full paths See also Switches ai Include archives an Disable parsing of archive _name 47 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip i Include filenames i Include filenames switch Specifies additional include filenames and wildcards Multiple include switches are supported Syntax i Execurss Types tl Te Pears stecures type gt ri 1 0J lt file ref gt listfile wildcard Parameters lt recurse_type gt Specifies how wildcards and file names in this switch must be used If this option is not given then the global value assigned by the r Recurse switch will be used For more details see specification of the r Recurse switch lt recurse type gt r 0 lt file_ref gt Specifies filenames and wildcards or a list file for files to be processed lt file ref gt listfile wildcard Option Description listfile Specifies name of list file See List file description wildcard Specifies wildcard or filename Exa
55. se memory usage Also you can change the number of threads The CPU Usage column shows the percentage of time the processor is working It s normalized for a one thread load For example 180 CPU Usage for 2 threads can mean that average CPU usage is about 90 for each thread The Rating Usage column shows rating normalized for 100 of CPU usage That column shows performance of the one CPU thread It must be close to real CPU frequency if you have modern CPU The Total rating shows averages of the compressing and decompression ratings Compression speed and rating strongly depend from memory RAM latency Decompression speed and rating strongly depend on CPU integer operations For example an Intel Pentium 4 has big branch misprediction penalty which is effect of long pipeline and pretty slow multiply and shift operations So the Pentium 4 has pretty low decompressing ratings Also the program checks possible errors If the program shows some error message in most cases it means that your RAM is defective If so don t use 7 Zip for compressing data since such errors can lead to data losses 20 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip About Dialog Box About Dialog Box The About dialog box provides information about 7 Zip and allows you to register 7 Zip This dialog box is available from the Help menu e Press www 7 zip org button for opening 7 Zip Home Page e Press Register button
56. ssw Compress files Open for writing occ nocionnonnanininnnnnnnn none 67 SN TO Uds PIS A A oral ces EV Create VOIUMES sia A Aiea Ns w Set Working directory csciciccdivccutectsccasecascouscociesnsacececatsouiee cavswevsesaseous A X EXcl d filenames Le AA cet eevee PE Re in EA SRR EE dE tla EA tt y Assume Yes on all queries http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip 7 Zip Start Page 7 Zip Welcome to 7 Zip 4 65 7 Zip is a file archiver with a high compression ratio The documentation for 7 Zip includes e General information about 7 Zip e User s Guide for 7 Zip File Manager e User s Guide for command line version See Also e How to register to 7 Zip e Frequently Asked Questions FAQ Copyright c 1999 2009 Igor Pavlov Web site www 7 zip org Support www 7 zip org support html Subscribe to news http www 7 zip org subscribe html Forum bugs tracking http sourceforge net projects sevenzip 1 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip General Information General Information The main features of 7 Zip e Powerful file manager e High compression ratio and high speed e Big number of supported archive formats e Additional command line version See Also e How to register 7 Zip e License for use and distribution 2 75 http www softforall com Utilities FileCompress
57. t the action set for each new archive is assigned as the action set of the main command There are 3 different action sets for commands a Add d Delete u Update You can overload any lt state_action gt pair Time zone notes If you change time zone when you move your computer to another time zone or if there are clock changes for daylight saving in your zone you can have some problems with update commands that depend from file s modification time It s strongly recommended to use only file system that uses Coordinated Universal Time UTC and archive format that also uses UTC In that case you will have no problems with time zone changes Also it s recommended to use only UTC formats in other cases for example if you send files to someone in another time zone Also in some cases there are no problems if both file system and archive format use local time for example FAT file system and ZIP format e UTC file systems NTFS e UTC archive formats zip with mtc switch 7z tar gzip2 iso wim e Local time file systems FAT FAT32 e Local time archive formats rar zip cab Examples 7z u c l exist 7z u up0q3x2z0 c l update 7z creates a new archive update 7z and writes to this archive all files from current directory which differ from files in exist 7z archive exist 7z archive will not be changed 7z u c l exist 7z up0q3x2z0 c 1 update 7z ms off creates a new archive update 7z and writes to this archive
58. t value is setup exe Substring T will be replaced with path to temporary folder where files were extracted Directory Directory prefix for RunProgram Default value is ExecuteFile Name of file for executing ExecuteParameters Parameters for ExecuteFile You may omit any pair 60 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip sfx Create SFX archive There are two ways to run a installation program RunProgram and ExecuteFile Use RunProgram if you want to run a program from the 7z archive Use ExecuteFile if you want to open a document from the 7z archive or if you want to execute a command from Windows If you use RunProgram and if you specify empty directory prefix Directory the system searches for the executable file in the following sequence 1 The directory from which the application installer loaded 2 The temporary folder where files were extracted 3 The Windows system directory Config file Examples Install UTF 8 Title 7 Zip 4 00 BeginPrompt Do you want to install the 7 Zip 4 00 RunProgram setup exe InstallEnd Install UTF 8 Title 7 Zip 4 00 BeginPrompt Do you want to install the 7 Zip 4 00 ExecuteFile 7zip msi InstallEnd Install UTF 8 Title 7 Zip 4 01 Update BeginPrompt Do you want to install the 7 Zip 4 01 Update ExecuteFile msiexec exe ExecuteParameters i 7zi
59. the user must substitute some string Expression expressionl expression2 expressionN means that any but only one from these expressions must be specified Commands and switches can be entered in upper or lower case Command is the first non switch argument The base_archive_name must be the first filename on the command line after the command The switches and other filenames can be in any order Wildcards or filenames with spaces must be quoted Dir Program files Dir Program files Switch options can be combined to save command line length However some switch options take optional string arguments and therefore must be the last option in a combined argument token string because 7 Zip accepts the rest of the argument token as the optional argument 7 Zip uses wild name matching similar to Windows 95 e means a sequence of arbitrary characters e means any character 7 Zip doesn t uses the system wildcard parser 7 Zip doesn t follow the archaic rule by which means any file 7 Zip treats as matching the name of any file that has an extension To process all files you must use a wildcard Examples txt means all files with an extension of txt a means all files with a second character of a 1 means all names that contains character 1 means all names that contain two at least characters The default wildcard will be used if there is no filename wildcard in
60. the command line Slash W at the end of a path means a directory Without a Slash W at the end of the path the path can refer either to a file or a directory List file You can supply one or more filenames or wildcards for special list files files containing lists of files The filenames in such list file must be separated by new line symbol s For list files 7 Zip uses UTF 8 encoding by default You can change encoding using scs switch Multiple list files are supported 30 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 Zi Syntax p y For example if the file listfile txt contains the following My programs cpp Sre cpp then the command 7z a tzip archive zip listfile txt adds to the archive archive zip all cpp files from directories My programs and Src Short and Long File Names 7 Zip supports short file names like FILENA 1 TXT in some cases However it s strongly recommended to use only the real long file names 31 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Exit Codes Exit Codes from 7 Zip 7 Zip returns the following exit codes Code Meaning 0 No error 4 Warning Non fatal error s For example one or more files were locked by some other application so they were not compressed 2 Fatal error 7 Command line error 8 Not enough memory for operation 255 User stopped the process 32 75
61. the size of the sfx module will be reduced to 40 50 of its original size SFX modules for installers SFX modules for installers are included in an external package 7z_extra You can download these modules from www 7 zip org SFX modules for installers 7zS sfx and 7ZSD sfx allow you to create your own installation program Such a module extracts the archive to the user s temp folder and runs a specified program and removes the temp files after the program finishes A self extracting archive for installers must be created as joining 3 files SFX_Module Installer_Config 7z_Archive In addition an optional file Installer_Config is allowed You can use the following command to create an installer self extracting archive copy b 7zS sfx config txt archive 7z archive exe An optimally small installation package size can be achieved if the installation files are uncompressed before including them in the 7z archive y switch for installer module specifies quiet mode extraction Installer Config file format This config file contains commands for the Installer The file begins with the string Install UTF 8 and ends with InstallEnd The file must be written in UTF 8 encoding The file contains any or all these string pairs ID_String Value ID_String Description Title Title for messages BeginPrompt Begin Prompt message Progress Value can be yes or no Default value is yes RunProgram Command for executing Defaul
62. ttack Organization Attack 1 OAN DO FW ND ek A GR E J a NO OBR WBN O 2s 1 min 30 min 12 hours 14 days 1 year 10 years 19 years 26 years 37 years 46 years 55 years 64 years 73 years 82 years 91 years 100 years 1s 1s 1s 1s 1s 1s 1s 20s 9 min 4 hours 4 days 4 months 4 years 13 years 22 years 31 years 40 years 6 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip Performance Performance ZIP Format Compression ratio results are very dependent upon the data used for the tests We compared 7 Zip with some of the leading commercial archivers PKZIP 2 04g WinZip 7 0 FILE SET The Canterbury Corpus 11 files totaling 2 810 784 bytes popular file set used to compression rates Archiver Compressed size Ratio 7 Zip zip format 676284 100 PKZIP 2 04g ex 726047 107 WinZip 7 0 Max 731499 108 7z Format 7z is the new archive format providing a high compression ratio FILE SET The GIMP 1 2 4 for Windows after full installation 127 subfolders 1304 files totaling 27 128 826 bytes The GIMP is the GNU Image Manipulation Program It can be downloaded from www gimp org Archiver Compressed size Ratio 7 Zip 7z format 5445402 100 WinRAR 3 10 6004155 110 WinAce 2 3 6242424 115 CABARC 1 0 6455327 119 7 Zip zip format 9461621 174 PKZIP 2 50 9842800 181 GZIP Format 7 Zip provides the best compression ratio for GZIP format The compressio
63. y w set Working directory switch Sets the working directory for the temporary base archive By default 7 Zip builds a new base archive file in the same directory as the old base archive file By specifying this switch you can set the working directory where the temporary base archive file will be built After the temporary base archive file is built it is copied over the original archive then the temporary file is deleted Syntax w dir path dir_path Specifies the destination directory path It s not required that a path end with a backslash If lt dir_path gt is not assigned then 7 Zip will use the Windows temporary directory Example 7z a tzip archive zip cpp wc temp adds cpp files to the archive zip archive creating a temporary archive in c temp folder Commands that can be used with this switch a Add d Delete u Update 73 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip x Exclude filenames x Exclude filenames switch Specifies which filenames or wildcarded names must be excluded from the operation Multiple exclude switches are supported Syntax x lt recurse typ gt lt file ref gt lt recurse type gt rl 0 lt file ref gt listfile wildcard See i Include switch description for information about option parameters Examples 7z a tzip archive zip txt x temp adds to the archive archive zip all
64. y symbol from set b k m dictionary size will be calculated as DictionarySize 2 Size bytes mt off on NH Sets multithread mode If you have a multiprocessor or multicore system you can get a speed increase with this switch This option affects only compression with any method and decompression of BZip2 streams Each thread in the multithread mode uses 32 MB of RAM for buffering If you specify N 7 Zip tries to use N threads GZip GZip uses the same parameters as Zip but GZip compresses only with Deflate method BZip2 Parameter Default Description x 1 3 5 7 9 5 Sets level of compression pass NumPasses 1 Sets number of Passes for Bzip2 encoder mt off on N on Sets multithreading mode x 113 15 7 19 Sets level of compression Level NumPasses Description 5 1 Default compression method 7 2 Maximum compression method 9 7 Ultra compression method pass NumPasses Sets the number of passes It can be in the range from 1 to 10 The default value is 1 for normal mode 2 for maximum mode and 7 for ultra mode A bigger number can give a little bit better compression ratio and a slower compression process mt off on N Sets multithread mode If you have a multiprocessor or multicore system you can get a speed increase with this switch If you specify N for example mt 4 7 Zip tries to use 4 threads 7z Parameter Default Description x 01113 5 7 9 5 Sets level of compression If a on
65. ynorsk Robert Gronning Pashto Zabeeh khan Polish Cienislaw Pixel F1xat Portuguese Brazil Francisco Jr Fabricio Biazzotto Atualizado por Felipe Portuguese Standard Carlos Macao Joao Alves Rui Costa Punjabi Indian Gurmeet Singh Kochar Romanian Lucian Nan 12 75 7 zip http www softforall com Utilities FileCompression 7 Zip 09050120 htm Thanks Serbo Croatian Miodrag Jevremovicc Slovak Tomas Tomasek Pavel Devecka Slovenian Jernej Simoncic miles Spanish Pablo Rodriguez Jbc25 Guillermo Gabrielli Swedish Andreas Nilsson Christoffer Enqvist Bernhard Eriksson Sinhala G S N Supun Budhajeewa Tamil Ve Elanjelian Tatarish Albert Fazli Thai Chayanon Ruamcharoen Turkish Ukrainian Andrij llechko Mokiy Mazaylo Sergiy Gontaruk Uzbek Sherzod Mamatkulov Valencian Tomas Miralles Fernando Verdu Vietnamese Tran Hong Ha Le Vu Hoang Voro Valdis Laan Welsh Owain Lewis 13 75 http www softforall com Utilities FileCompression 7 Zip 09050120 htm 7 zip File Manager 7 Zip File Manager The 7 Zip File Manager is a program for manipulating files and folders The 7 Zip File Manager can work with two panels You can switch between panels by pressing the Tab button Most of the operations can be executed using keyboard shortcuts or by right clicking on items and selecting the appropriate command from menu In This Section Menu Items and Shortcut Keys Descri

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