VAX/VMS KERMIT-32 USER GUIDE
Contents
1. DIRECTORY command DIRECTORY filespec so any options valid for the DCL DIREC TORY command may be included DISK_USAGE uic Display disk usage information for the given UIC If no UIC is given display disk usage information for the process UIC This command is performed by using the DCL SHOW QUOTA command SHOW QUOTA or SHOW QUOTA USER uic HELP Display the help message describing the server commands which are available HOST DCL command Perform the given DCL command The command should not perform any action which will require more input Any output resulting from the command will be typed on the terminal RENAME filespec Change the name of the specified file Kermit 32 will prompt for the new name on the next line This command is performed by using the DCL RENAME command RENAME LOG old file new file so any options which are valid on the DCL RENAME command may be included SEND_MESSAGE terminal name Send a single line message to the given terminal Kermit 32 will prompt for the message on the next line Since this command is performed using the DCL REPLY command REPLY TERMINAL terminal name message OPER privileges are needed to perform it TYPE filespec Display the contents of the specified file or files at your terminal Each file will be preceded by its name in angle brackets 1 4 4 The CONNECT Command Syntax CONNECT terminal name Establish a terminal connection to the system connected to the2. are optional features of the Kermit protocol it will reply with a message like Unknown Kermit server command If does understand it will send the results back and they will be displayed on the screen The REMOTE commands are COPY filespec Copy file The server is asked to make a copy of the specified file Kermit 32 will prompt for the new file name on a separate line Both filespecs must be in the correct format for the remote system Kermit 32 does not parse or validate the file specifications Any leading spaces will be stripped and lower case characters converted to upper case Note that this command simply provides for copying a file within the server s system it does not cause a file to be transferred CWD directory Change Working Directory If no directory name is provided the server will change to the default or home directory Otherwise you will be prompted for a password and the server will attempt to change to the specified directory The password is entered on a separate line and does not echo as you type it If access is not granted the server will provide a message to that effect Note that while not all server Kermits require or accept a password to change the working directory Kermit 32 will always ask for one when a directory name is provided DELETE filespec Delete the specified file or files The names of the files that are deleted will appear on your screen DIRECTORY filespec The names of the files that mat
3. case the server s NAKs could confuse the modem s autodialer SET TRANSMIT Syntax SET TRANSMIT DELAY integer SET TRANSMIT ECHO ON OFF It is possible to set a few parameters associated with the raw TRANSMIT command that vary both what the user sees on the screen as well as the speed of the transmit SET TRANSMIT DELAY This parameter is the amount of time to delay after each carriage return is transmitted Valid delay values range between 0 the default and 9 tenths of a second The format of the command is SET TRANSMIT DELAY d Where d is a single decimal digit representing tenths of a second Some remote hosts may not be able to receive the characters as fast as Kermit 32 can send them The TRANSMIT DELAY can be used to slow up the transfer by adding a slight delay after each line is sent The transfer also runs slower if the transmit echo is on and the remote system is echoing the characters as it receives them If the transmit delay is set to 9 tenths of a second the remote system is echoing characters the transmit echo is on and the remote system still cannot keep up then the connection should be made at a slower baud rate Conversely the file transfer speed can be increased by setting the delay to 0 and the echo off stopping the remote system from echoing the characters it receives and connecting at higher baud rates SET TRANSMIT ECHO This command controls what the user sees on the screen during the file transfer The fo
4. or process This command is identical to the LOGOUT command RENAME filespec Change the name on the specified file or files Kermit 32 will prompt for the new file specification on the next line Both file specifications must be valid for the server s system SEND_MESSAGE destination address Request the server to send a single line message to the specified destination address which might be a user id terminal designator or some other item depending upon the server Kermit Kermit 32 will prompt for the single line message on the next line SPACE directory Display information about disk usage in the given directory or by the given user If no directory is provided disk usage information is provided for the current working directory or user This is the same as the REMOTE DISK USAGE command STATUS Display information about the status of the server TYPE filespec Display the contents of the specified file on your screen WHO user id Display information about the given user If no user id is given display information about the currently active users Kermit 32 will prompt for options for selecting what information to display and or formatting parameters The format of both the user id and the options are dependent upon the server Kermit 1 4 3 Commands for Local File Management Syntax LOCAL command Execute the specified command on the local system on the VAX VMS system where Kermit 32 is running These commands provi
5. remote Kermit 32 in server mode so that it receives all further commands in packets from the local Kermit The Kermit 32 server is capable as of this writing of executing the following remote server commands SEND GET FINISH BYE REMOTE DIRECTORY REMOTE CWD REMOTE SPACE REMOTE DELETE REMOTE TYPE REMOTE HELP REMOTE COPY REMOTE RENAME REMOTE SEND_MESSAGE REMOTE WHO and REMOTE HOST Any nonstandard parameters should be selected with SET commands before putting Kermit 32 into server mode in particular the file type The Kermit 32 server can send all files in the correct manner automatically However if you need to ask Kermit 32 to receive binary files you must issue the SET FILE TYPE BINARY command before putting it into server mode and then you must only send binary files You cannot send a mixture of text files and 8 bit binary files to a Kermit 32 server unless the files are not for use on the VAX Commands for Servers When running in local mode Kermit 32 allows you to give a wide range of commands to a remote Kermit server with no guarantee the that the remote server can process them since they are all optional features of the protocol Commands for servers include the standard SEND GET BYE LOGOUT and FINISH commands as well as the REMOTE command Syntax REMOTE command Send the specified command to the remote server If the server does not understand the command all of these commands
6. the SET FILE BLOCKSIZE command Because the VMS file system is so complex and because files created by different applications can have different characteristics you might have to experiment with different values for the SET FILE TYPE and SET FILE BLOCKSIZE commands before you find the one that works right for you ASCII This is the default file type Incoming files are stored as standard VAX VMS text files with variable length records and carriage return line feed sequences implied between records that is with the CR carriage control record attribute This is the format preferred by most utility programs under VAX VMS A fatal error occurs if any line is more than 4096 characters long Note that incoming lines are only terminated by carriage return line feed sequences A carriage return that is not followed by a line feed or a line feed that is not preceded by a carriage return is not considered the end of a line and is included within the body of a record BINARY Store received files with variable length records and no record attributes Records are written BLOCK FIXED using the current blocksize The last record may be short with its record size correctly indicated The default blocksize for binary files is 510 so that a record together with its two byte length field exactly fill a 512 byte VMS disk block Any file which is just a stream of bytes can be stored as a BINARY file and recovered intact later This is the pref
7. the device for instance the area belonging to the owner of the file Kermit 32 does not normally transmit the device or directory fields to the target system but will attempt to honor device or directory fields that may appear in incoming file names It will not create new directories however so any directory specified in an incoming filename must already exist The name is the primary identifier for the file The type also called the extension is an indicator which by convention tells what kind of file we have For instance FOO FOR is the source of a Fortran program named FOO FOO OBJ might be the relocatable object module produced by compiling FOO FOR FOO EXE could an executable program produced by LINKing FOO OBJ and so forth VAX VMS allows a group of files to be specified in a single file specification by including the special wildcard characters and 3 A matches any string of characters including no characters at all a matches any single character Here are some examples FOR All files of type FOR all Fortran source files in the default directory FOO Files of all types with name FOO F All files whose names start with F F X All files whose names start with F and contain at least one X 4 All files whose names are exactly one character long All files whose types are at least two characters long Wildcard notation is used on many computer systems in similar ways and it i
8. Commands The HELP Command Syntax HELP topic subtopic Typing HELP alone prints a brief summary of Kermit 32 and its commands You can also type HELP command for any Kermit 32 command e g help send or help set parity to get more detailed information about a specific command The HELP feature depends on the Kermit 32 help file being correctly installed on your system The EXIT and QUIT Commands Syntax EXIT Exit from Kermit 32 You can also exit from the Kermit 32 when it is waiting for a command by typing a control Z When Kermit 32 is running remotely two control Y s will abort the transfer bringing Kermit 32 back to command mode The two control Y s must be typed together if a timeout occurs between them the first is ignored When Kermit 32 is running locally two control Y s will stop Kermit 32 and return you to DCL You will be able to CONTINUE if you do not perform any command which runs a program However after continuing control A control X and control Z will no longer be accepted as commands QUIT is a synonym for EXIT 1 4 6 Program Management Commands Page 17 The LOG Command Syntax LOG option filespec Log the specified option to the specified file SESSION During CONNECT log all characters that appear on the screen to the specified file During CONNECT the session log can be temporarily turned off during the remote session by typing the escape character followed by Q for Quit l
9. MIT command allows you to upload files raw to systems that don t have a Kermit program available Note that there is no error checking or packets involved in this method of file transfer This command does a raw transmit of an ASCII file one character at a time with carriage returns no line feeds at the end of each line It is used with Kermit 32 in local mode The user must first prepare the remote host to receive the file by starting an edit session in input mode Then the user can escape back to Kermit 32 and issue the TRANSMIT command After the transmit is finished the user then CONNECTs back to the remote host again and ends the edit session During a file transmit the following control characters can be used to affect the transfer in progress CTRL C Cancel the transmit CTRL X Cancel the file currently being transmitted CTRL Z Cancel the file group currently being transmitted Page 18 Kermit User Guide VAX VMS KERMIT 1 5 See SET TRANSMIT for information about controlling echo and delays The LOG SESSION Command Syntax LOG SESSION file spec Raw Download is the term commonly used to describe the capture of a remote file on the local system without any kind of error detection or correction This allows you to obtain files from remote systems that do not have Kermit but with the risk of loss or corruption of data Kermit 32 provides raw downloading via the LOG SESSION command during CONNECT to a remote system The s
10. RANSMIT command for raw uploading 1 6 Installation of Kermit 32 VMS Kermit 32 comes in 3 forms Hex Macro source and Bliss source Each can be used as the basis for installation Before beginning make a special directory for VMS Kermit and read the files VMS from the Kermit distribution tape into this directory Columbia s 9 track Kermit tapes are written with blocksize 8192 which is 4 times larger than the default tape blocksize for VMS You should mount these tapes on the VMS system with the following command MOUNT BLOCK 8192 DENSITY 1600 MTAO KERMIT or substitute some other tape drive name for MTAO Do not use the FOREIGN switch Once the tape is mounted 1 6 Installation of Kermit 32 Page 19 you can use normal VMS COPY commands to copy the files from the tape For instance if you have defined your Kermit directory to have logical name KER you can use the following command to copy the VMS Kermit files into this directory copy mtaO vms ker You might also have received Kermit on a TK50 tape cartridge that contains a VMS BACKUP saveset in which case do this to get the files off 1 SET DEFAULT to the directory under which you want the various Kermit subdirectories created 2 Physically mount the TK50 cartridge and type MOUNT TAPE1 FOREIGN 3 Type BACKUP LOG TAPE1 SAVE Installation Procedure If you are running a pre 4 0 version of VMS ignore the following material and s
11. SYS BLI System interface routines for the Kermit generic command processing SGEN MAR Macro 32 source file that contains the REMOTE command text that is given to VMS Sites desiring to change what DCL commands are used to process the various generic server commands can make those changes in this source This also contains the text of the help message returned in response to the server generic help command VMSERR MSG MESSAGE source for error messages used by VAX VMS Kermit VMSERR REO BLISS 32 require file which defines the error codes This is REQUIREd by the BLISS 32 sources VMSMIT MSS SCRIBE source file for VMSMIT DOC this document VMSMIT RNH RUNOFF source for the help files for VAX VMS Kermit When this is run through RUNOFF with VARIANT SYSTEM it produces a HLP VMSSYS HLP file suitable for inserting into the system help library SYS HELP HELPLIB HLB to provide a KERMIT topic for the system HELP command When run through RUNOFF without the VARIANT SYSTEM it produces a HLP file VMSUSR HLP to be stored on SYS HELP for use by the Kermit HELP command VMSSYS HLP RUNOFF output file for system wide Kermit HELP VAX VMS Kermit Page 21 USR HLP RUNOFF output file for Kermit s HELP command REN COM Command file to rename VMS to KER INS COM Command file to build and install VAX VMS Kermit IT HEX A hexified version of EXE file for VMS Kermit This file can be dehexified using the supplied prog
12. UE 16 Control A 7 Control C 16 Control X 7 Control Z 7 Debugging 12 DELETE 7 Eighth Bit Prefix 6 7 Escape Character for CONNECT 12 EXIT 16 File Type 13 Handshake 14 IBM 14 Incomplete File Disposition 7 Initial Filespec 6 Interference 5 Message Interference 5 Normal Form for File Names 6 13 Parity 6 7 QUIT 16 Raw Download 18 RECEIVE 7 Record too big 3 Repeated Character Compression 7 SEND 6 Server 9 SHOW 15 UNDELETE 7 VAX VMS 1 Version 7 Wildcard 2 Page 24 Kermit User Guide VAX VMS Kermit Pagei Table of Contents 1 VAX VMS KERMIT 1 1 1 The VAX VMS File System 2 1 2 Program Operation 4 1 3 Conditioning Your Job for Kermit 5 1 4 Kermit 32 Commands 6 1 4 1 Commands for File Transfer 6 1 4 2 Server Operation 9 1 4 3 Commands for Local File Management 10 1 4 4 The CONNECT Command 11 1 4 5 The SET and SHOW Commands 12 1 4 6 Program Management Commands 16 1 5 Raw Upload and Download 17 1 6 Installation of Kermit 32 18 Index 23
13. VAX VMS KERMIT 32 USER GUIDE Version 3 3 126 Christine M Gianone and Frank da Cruz Columbia University Center for Computing Activities New York New York 10027 July 1990 Copyright C 1981 1990 Trustees of Columbia University in the City of New York Permission is granted to any individual or institution to use copy or redistribute this document so long as it is not sold for profit and provided this copyright notice is retained 1 VAX VMS KERMIT Page 1 1 VAX VMS KERMIT Authors Robert C McQueen Nick Bush Stevens Institute of Technology Jonathan Welch University of Massachusetts Burt Johnson Diversified Computer Systems Inc Language Bliss 32 Documentation C Gianone F da Cruz Columbia University with thanks to the program s authors Version 34324126 Date July 1990 VAX VMS Kermit 32 Capabilities At a Glance Local operation Yes Remote operation Yes Transfers text files Yes Transfers binary files Yes Wildcard send Yes Long packets Yes Sliding windows No Attribute packets No File transfer interruption Yes Filename collision avoidance Yes Timeouts Yes 8th bit prefixing Yes Repeat character compression Yes Alternate block check types Yes Communication settings Yes Transmit BREAK Yes IBM mainframe communication Yes Transaction logging Yes Session logging raw capture Yes Debug logging Yes Raw transmit Yes Act as server Yes Talk to server Yes Advanced commands
14. ch the given file specification will be displayed on your screen perhaps along with size and date information for each file If no file specification is given all files from the current directory will be listed DISK_USAGE directory Display information about disk usage in the given directory or by the given user If no directory is provided disk usage information is provided for the current working directory or user This is the same as the REMOTE SPACE command EXIT Requests the server to leave Kermit allowing the terminal to be used for normal commands Page 10 Kermit User Guide VAX VMS KERMIT 1 4 2 FINISH Requests the server to return to the Kermit prompt allowing statistics to be obtained about the transfers HELP topic Provide information about the given topic If no topic is given provide a list of the functions that are available from the server Some servers may ignore the topic and always display the same information HOST command Pass the given command to the server s host command processor and display the resulting output on your screen LOGIN user id Supply information to the server Kermit to indicate what user id account and password are to be used The server Kermit may use this to validate the user s access to the system as well as for billing purposes It may also use this information to provide the user with access to files on its system LOGOUT Request the server to exit Kermit and logout its job
15. d take no special measures to send it back to its system of origin This is because Kermit 32 honors the record type and attributes of the file as it is stored on the VAX In fact SET FILE TYPE BINARY ASCII or FIXED only affects how Kermit 32 receives files it does not affect how Kermit 32 transmits files Files Kermit 32 Cannot Handle The Kermit protocol can only accommodate transfer of sequential files files which are a linear sequence of bytes or words Some files on a VAX VMS system are not sequential and cannot be successfully sent or received by Kermit 32 These are mainly indexed data files but can also include other files which require more than just the data in the file to be completely reconstructed External control information and file attributes are not transmitted However any VMS file can be transferred with Kermit if it has been hexified with VMSHEX 1 2 Program Operation If a system wide foreign command kermit is defined for Kermit 32 see section on installation then you can run the program by just typing its name kermit If you get a message like SDCL W IVVERB unrecognized command verb check validity and spelling then Kermit has not been installed properly on your VMS system If you know where the KERMIT EXE file is stored for example in the SYSSSYSTEM area then you can define a kermit command for yourself by including a line like this in your LOGIN COM file kerm
16. de some local file management capability without having to leave the Kermit 32 program These commands are very similar to the REMOTE commands in function and syntax They are all executed locally and are available when Kermit 32 is either local or remote The arguments to these commands are the same as the arguments expected from the user Kermit when Kermit 32 is processing a command in server mode COPY filespec Make a copy of the given file or files Kermit 32 will prompt for the new file specification The command is actually performed by using the DCL COPY command COPY LOG old file new file and any options which are valid on the DCL COPY command may be included CWD directory Change working directory or in VAX VMS terminology change the default device directory This command takes the same arguments as the DCL SET DEFAULT command i e a device and directory only a directory or only a device If no argument is given the default device and directory are reset to that in effect when Kermit 32 was run The new default device and directory will be typed out DELETE filespec Delete the specified file or files This command is performed by using the DCL DELETE command DELETE LOG filespec Therefore any options which are valid on the DCL DELETE command may be included DIRECTORY filespec Provide a directory listing of the specified files This command is performed by using the DCL 1 4 3 Commands for Local File Management Page 11
17. e name in the header is not a legal VAX VMS file name Kermit 32 will normally replace the illegal characters with X see SET FILE NAMING NORMAL_FORM If an incoming file has the same name as an existing file Kermit 32 just creates a new version of the same name and type for instance FOO BAR 3 FOO BAR 4 Incoming files are stored with the prevailing file type ASCII by default which is appropriate for text files If you are asking Kermit 32 to receive binary files from a microcomputer or other 8 bit system you must first type SET FILE TYPE BINARY Otherwise an error may occur when receiving the file or carriage return linefeed sequences will be added to the file making it useless when sent back to the system of origin If parity is being used on the communications line then 8th bit prefixing will be requested If the other side cannot do this binary files cannot be transferred correctly If parity is being added externally to Kermit and VMS for example by some kind of communication device or a public data network like Telenet then you must inform Kermit 32 about it using the SET PARITY command or else Kermit 32 will not know that it has to do 8th bit prefixing and the file transfer will fail If an incoming file does not arrive in its entirety Kermit 32 will normally discard it it will not appear in your directory You may change this behavior by using the command SET INCOMPLETE KEEP which will cause as much of the file as arriv
18. ed to be saved in your directory If you are running Kermit 32 in local mode you should already have issued a SEND command to the remote Kermit and then escaped back to Kermit 32 As files arrive their names will be displayed on your screen You can type Control A during the transfer for a brief status report If a file arrives that you don t really want you can attempt to cancel it by typing Control X this sends a cancellation request to the remote Kermit If the remote Kermit understands this request not all implementations of Kermit support this feature it will comply otherwise it will continue to send If a file group is being sent you can request Page 8 Kermit User Guide VAX VMS KERMIT 1 4 1 the entire group be cancelled by typing Control Z The GET Command Syntax GET remote filespec The GET command requests a remote Kermit server to send the file or file group specified by remote filespec This command can be used only when Kermit 32 is in local mode with a Kermit server on the other end of the line specified by SET LINE This means that you must have CONNECTed to the other system logged in run Kermit there issued the SERVER command and escaped back to the VAX The remote filespec is any string that can be a legal file specification for the remote system it is not parsed or validated locally Any leading spaces before the remote filespec are stripped and lower case characters are raised to upper case As fil
19. eply NO to the Rebuild from source question Note that the help files which are installed apply to the current release 3 3 126 rather than to version 3 3 Defining a Kermit Command You should define a system wide symbol for Kermit as a foreign command for example in your SYSSMANAGER SYLOGIN COM system wide login command file like this KERMIT SYS SYSTEM KERMIT EXE so that users can run Kermit just by typing its name Files Kermit 32 is built from a number of BLISS 32 sources and one MACRO 32 source In order to make it possible for sites without BLISS 32 to build MACRO 32 sources generated by BLISS 32 are also included for all of the BLISS modules The following files are distributed as part of Kermit 32 VMSTT BLI Common BLISS source for the terminal text output support VMSGLB BLI Common BLISS source for the global storage for VMSMSG BLI VMSMSG BLI Common BLISS source for the protocol handling module V SCOM REQ Common BLISS require file which defines various common parameters This is required by VMSMSG BLI This file must be renamed to KERCOM REQ VMSMIT BWR Beware File for Kermit 32 read it VMSMIT BLI BLISS 32 source for the command parser and some basic support routines VMSFIL BLI BLISS 32 source for the file I O VMSTRM BLI BLISS 32 source for the terminal processing This handles the driving of the terminal line for the transfers and the connect command processing VMS
20. er kind of parity use the SET PARITY command to change it There are two things to keep in mind when using Kermit 32 in local mode where the file transfers are done over a different terminal line from where commands are typed e Under VAX VMS every terminal line has an owner UIC and protection code associated with it This UIC and protection is used to determine who can allocate and therefore use the terminal line when they are not logged in on that line Therefore in order for Kermit 32 to be able to perform file transfers over a terminal line other than the one on which you are logged in the field of the protection code for the terminal which applies to your job based on your UIC and the owner UIC of the terminal must allow your job access to the terminal You may need to request your system manager to change the protection for a terminal line to allow you to use it with Kermit 32 in local mode See the section on Installation for details e Terminal lines which have been declared as modem control lines will have the phone hung up whenever the terminal line becomes free deallocated This means that if you do not use the DCL ALLOCATE command to allocate the terminal line to your job before entering Kermit 32 exiting Kermit 32 will cause the terminal line to hang up the modem If you do wish to get to DCL after having used Kermit 32 to connect a modem control line which you do not have allocated you can use the PUSH command to spawn a
21. er process is used The logical names Kermit 32 tries are KER COMM SYS INPUT SYS OUTPUT and SYS COMMAND If none of these translate to an available terminal Kermit 32 is running detached and a terminal must be specified by the SET LINE command before any actions can be performed If a terminal is found Kermit 32 is running locally if this is a terminal other than the one controlling the job i e different from SYS COMMAND otherwise Kermit 32 is running remotely You can also select the line directly in the CONNECT command the command CONNECT TTAO is equivalent to SET LINE TTAO CONNECT If you type SET LINE with no argument you will deassign any previous assigned line and revert to remote mode on your job s controlling terminal 1 4 5 The SET and SHOW Commands Page 15 SET SERVER_TIMEOUT Syntax SET SERVER_TIMEOUT number This specifies the number of seconds between timeouts during server command wait 0 specifies that no timeouts should occur during server command wait When a Kermit server times out it sends a NAK packet Some systems cannot clear piled up NAKs from their input buffers if you re using such a system to communicate with a Kermit 32 server and you expect to be leaving the server idle for long periods of time you should use this command to turn off server command wait timeouts This command is also useful when a server is connected to a modem that is waiting for a call to come in in which
22. erred file type for use in archiving non VMS files The longest possible record is 32765 plus two bytes for the RMS length field Store received files exactly as they come in byte for byte with no formatting or record length information When sending files send the file data literally including record attributes if any and ignoring all RMS attributes Using a file type of BLOCK has proven effective when transferring files between the same application on unlike systems for example Lotus 1 2 3 spreadsheets between VMS and MS DOS When receiving a file in this mode any unused portions of the last block are filled with zeros Store the file as a fixed length record binary file Any file received is stored as fixed length records with no record attributes using the current blocksize i e record length 512 by default Fixed length 512 byte records is the format used for binary files such as VAX VMS EXE files and RSX 11M M TSK files VMS BACKUP savesets are fixed length record files with a record length blocksize of 2048 or more Since even the last record of the file is written with the whole record length even if it is not filled this format does not necessarily maintain the correct length of a file It should normally only be used for fixed length record files coming from a VAX VMS PDP 11 or other system when the fixed length nature of the data must be preserved NAMING keyword Determine the form of names to be sent with outg
23. es arrive their names will be displayed on your screen As in the RECEIVE command you may type Control A to get a brief status report Ctrl X to request that the current incoming file be cancelled Ctrl Z to request that the entire incoming batch be cancelled If the remote Kermit is not capable of server functions then you will probably get an error message back from it like Illegal packet type In this case you must connect to the other Kermit give a SEND command escape back and give a RECEIVE command The STATUS Command Give statistics about the most recent file transfer The PUSH Command Syntax PUSH Spawn a DCL subprocess to which you may issue any DCL commands Type LOGOUT to return to Kermit 32 The TAKE Command Syntax TAKE file spec DISPLAY Where file spec is any normal VAX VMS file specification If file spec does not specify a file type Kermit 32 will supply a default of COM The DISPLAY option causes the commands read from the file to be displayed on the user s terminal The TAKE command tells Kermit 32 to execute commands from the specified file You may also use the VMS notation instead of TAKE to specify a command file If it exists the file VMSKERMIT INI or if the logical name VMSKERMIT is defined whatever file it points to is automatically taken upon program startup 1 4 2 Server Operation Page 9 1 4 2 Server Operation The SERVER Command The SERVER command puts a
24. ess the file specification includes specific or wild generation numbers Files will be sent with at least their VAX VMS file name and type for instance FOO BAR If a SET FILE NAMING FULL command has been given Kermit 32 will also send the device name directory name and version number for instance USERSDISK JOE FOO BAR 25 If a SET FILE NAMING UNTRANSLATED command has been given Kermit 32 will send the file name type and version number for instance FOO BAR 25 If a SET FILE NAMING NORMAL_FORM command has been given this is the initial default Kermit 32 will only send the file name and type Each file will be sent according to the record type and attributes recorded in its file descriptor Kermit 32 attempts to translate all text file record formats including those with FORTRAN or print carriage control to a format usable on any system Note that there is no need to set the FILE TYPE parameter for sending files since Kermit 32 always uses the information from the file descriptor to determine how to send the file 1 4 1 Commands for File Transfer Page 7 If communication line parity is being used see SET PARITY Kermit 32 will request that the other Kermit accept a special kind of prefix notation for files that contain 8 bit data This is an optional Kermit protocol feature supported by most modern Kermit programs If the other Kermit does not agree to use this feature binary files cannot be sent correctly This includes exec
25. ession log is described above To use session logging to capture a file 1 Run Kermit on the VAX VMS system 2 SET LINE to the terminal line through which you will be connected to the remote system Ow Perform any required SET commands to condition Kermit for communication with the remote system 4 CONNECT to the remote system and log in 5 Condition your job on the remote system not to pause at the end of a screenful of text and give whatever commands may be necessary to achieve a clean terminal listing for instance disable messages from the system or other users 6 Type the appropriate command to have the desired file displayed at the terminal but do not type the oN terminating carriage return On most systems the command would be type on Unix it s cat 7 Escape back to Kermit 32 and give the LOG SESSION command with the file specification where you wish to store the data oo CONNECT back to the remote system and type a carriage return The file will be displayed on your screen and recorded in the session log file 9 Escape back to Kermit 32 and give the LOG SESSION command without a file specification to close the session log file The file you specified will contain everything that was typed on your screen You will probably find that some editing necessary to remove extraneous prompts messages padding characters or terminal escape sequences or to fill in lost or garbled characters Use the T
26. for servers Yes Local file management Yes Initialization file Yes VMSKERMIT INT Command Macros No Script programming language No International Character Sets No Kermit 32 is a program that implements the Kermit file transfer protocol for the Digital Equipment Corporation VAX series computers under the VAX VMS operating system It is written in BLISS 32 and MACRO 32 with sources for all BLISS modules also available as MACRO 32 sources Kermit 32 should run on any VAX VMS system from version 4 0 on Version 3 1 of Kermit 32 is the last version that runs under pre 4 0 releases of VMS The first section of this chapter will describe the things you need to know about the VAX VMS file system and how Kermit 32 uses it The second section describes the special features of Kermit 32 The final section contains information of interest to those who need to install Kermit 32 on a system Page 2 Kermit User Guide VAX VMS KERMIT 1 1 1 1 The VAX VMS File System The two main items of interest of the VAX VMS file system for the Kermit user are the format of file specifications and the types of files and file data VAX VMS File Specifications VAX VMS file specifications are of the form NODE DEVICE DIRECTORY NAME TYPE VERSION Under version 4 0 and later of VMS NAME TYPE and each item in DIRECTORY may be up to 39 characters long and may contain alphanumeric characters plus underscore Under earlier versions NAME and DIRECTORY c
27. it sys system kermit ex When you invoke Kermit by name only it will enter interactive prompting mode and allow you to type repeated commands until you exit with the EXIT command Kermit 32 s normal prompt is Kermit 32 gt Kermit 32 will also accept a single command on the command line like this Kermit send foo bar In this case the program will exit immediately after executing the single command 1 2 Program Operation Page 5 In either case Kermit reads and executes commands from its initialization file VMSKERMIT INT if any in your login directory before it executes any other commands Kermit 32 will try to open the file VMSKERMIT with a default filetype of INI If the logical name VMSKERMIT exists then an attepmt to open the file pointed to by the value of that logical name will be made instead For example some sites might wish to set site wide default parameters in a system wide Kermit 32 initialization file and so they might define the system wide logical name VMSKERMIT to point at such a file The last command in this file could be TAKE SYSSLOGIN VMSKERMIT INI to chain to the user s initialization file Command keywords may be abbreviated to their shortest prefix that sets them apart from any other keyword valid in that field 1 3 Conditioning Your Job for Kermit Kermit 32 does as much as it can to condition your line for file transfer It saves all your terminal settings and rest
28. kip ahead to the section Kermit 32 for Old VMS Versions At present there is no VMSINSTAL kit for Kermit 32 However there is a DCL procedure that will do most of the installation work for you It is called VMSINS COM To run it type S vmsins It will ask you the question Rebuild from sources YES or NO If you reply NO then the Kermit task image will be decoded from the the VMSMIT HEX file into KERMIT EXE If you reply YES you will be given the choice of building the program from the Macro 32 sources which are generated by the Bliss compiler from the original Bliss source code or from the Bliss itself All sites can build from Macro but only those sites with Bliss compilers can build from the Bliss After building the KERMIT EXE file the VMSINS procedure copies it into SYSSSYSTEM and then builds and installs the Kermit 32 help file in the system wide help library SYSSHELP HELPLIB HLB so that users can get help for Kermit by typing help kermit at the DCL prompt and it will also build and install SYS HELP KERMIT HLP so that the HELP command will work from within Kermit HEX Macro or Bliss The VMSMIT HEX file is built from KERMIT EXE under the oldest version of VMS that the developers have access to for example VMS 4 5 If you are running that version of VMS or later then you should reply NO to the Rebuild from sources YES or NO question If y
29. ogging and turned on again by typing the escape character followed by R for Resume logging TRANSACTIONS During file transfer log the progress of each file Transaction logging is recommended for long or unattended file transfers so that you don t have to watch the screen The log may be inspected after the transfer is complete to see what files were transferred and what errors may have occurred DEBUGGING Log debugging info to the specified file If no SET DEBUGGING command was previously issued the file will be opened and no information written If DEBUGGING is turned on either via the SET DEBUGGING command or by typing control D during a local transfer the packet debugging information will be written to the file Packet format is described in Kermit A File Transfer Protocol Frank da Cruz Digital Press 1987 Any log files are closed when you EXIT or QUIT from Kermit You may explicitly close a log file and terminate logging by using the LOG command without a file specification The STATUS Command Syntax STATUS The current status of Kermit 32 will be displayed This includes the number of characters that have been sent and received from the remote Kermit Also included is an estimate of the effective baud rate of the transfer This number is not intended to be exact but only an indication of what range of throughput has been provided 1 5 Raw Upload and Download The TRANSMIT Command Syntax TRANSMIT file spec The TRANS
30. oing files and determine the translation performed on incoming file names The choices are FULL NORMAL_FORM and UNTRANSLATED FULL Kermit 32 will send full file names including device directory file name file type and version number When receiving a file Kermit 32 will perform no translation of the file name which must therefore be a legal VAX VMS file specification NORMAL_FORM Page 14 Kermit User Guide VAX VMS KERMIT 1 4 5 Kermit 32 will send only the file name and file type When receiving a file Kermit 32 will convert the file specification received to contain only uppercase letters digits and at most one period Any other characters will be translated to X There will be at most 39 characters before the period if any and at most 39 characters afterwards This forces the file name to be a valid VAX VMS file specification for VMS versions 4 0 and later This is the default style of file naming UNTRANSLATED Kermit 32 will send only the file name and file type When receiving a file Kermit 32 will not perform any conversions on the file specification which therefore must be a legal VAX VMS file specification If you want to receive files with long names use this option To transfer files with VAX VMS long names between two VMS 4 0 or later systems use this option on both sides SET HANDSHAKE Syntax SET HANDSHAKE 000 Sets the half duplex line turnaround handshake character to the ASCII character whose oc
31. ores them after use However there are some sources of interference over which Kermit 32 has no control In particular messages issued by other processes in your job could become mingled with Kermit packets and slow things down or stop them entirely This is a fairly rare occurence and can be easily avoided by not running any other process which wishes to perform I O to your terminal while you are running Kermit 32 Normally when Kermit 32 is run it assumes you wish to use it in remote mode and perform file transfers over the terminal line which controls your job This can be overridden however by defining a logical name which equates to some other terminal line in the system The default terminal line to be used for file transfers is determined by the first of the following logical names which translates to a terminal line which is available for use by your process KER COMM SYS INPUT SYS OUTPUT and SYS COMMAND If none of these logical names translate to an available terminal line there is no default terminal line and a SET LINE command must be used before any transfer command is performed Note that this is the typical case in a batch job Kermit 32 will also default the type of parity to be used on the communication line to that which is set on its default terminal line when it is started This means that if all communication at a site is normally done using even parity for example Kermit 32 will also use even parity If you need to use anoth
32. ou are running an older version of VMS than the one under which the Kermit that forms the basis of the hex file was linked then you will not be able to run it on your VMS system because of a runtime library conflict In that case you should reply YES to the question and VMSINS will try to build the program from the Macro 32 assembly language source code using your system s MACRO command This should build a working version of Kermit 32 on all VAX VMS systems 4 0 or later The only reason for building from the Bliss source is if you have made changes to Kermit 32 It is recommended that you only work on the Bliss source and not the Macro source If you make changes to the macro source there is no way to carry them forward to the Bliss code which is the true source code for the program If you do intend to make changes to the Bliss code be sure to contact Columbia University s Kermit Distribution Center first to make sure you are working from the latest release and that nobody else has already done or is working on the same thing Page 20 Kermit User Guide VAX VMS KERMIT 1 6 Kermit 32 for Old VMS Versions If you are running a pre 4 0 version of VAX VMS then you will have to install a very old version 3 1 of Kermit 32 rather than the current version until you upgrade your VMS version To use version 3 1 of VMS Kermit 1 Rename VMSMIT HEX to VMSV33 HEX 2 Rename VMSV31 HEX to VMSMIT HEX 3 Run the VMSINS procedure and r
33. ould be at most 9 characters each and TYPE could be at most 3 VERSION is a decimal number indicating the version of the file generation DEVICE may be either a physical or logical device name If it is a logical name it may be up to 63 characters long and may contain alphanumeric characters plus dollar signs and underscores NODE may be either a logical name which translates to a DECnet node name or a physical DECnet node name In either case access information can be included see the DECnet VMS User s guide for more information The node name is not normally present since most files are accessed on the same node where the user s job is running The version number is not normally given in fact should not normally be given When device and or directory are not supplied they default to the user s current default device and directory Therefore NAME TYPE is normally all that is needed to specify a file on the user s default device and directory This is also all that Kermit 32 will normally send as the name of a file being transferred The node field specifies the name and access information for the DECnet node where the file is located Kermit 32 does not transmit the node field to the target system but will attempt to honor a node field in an incoming file name The device field specifies a physical or logical device upon which the file is resident The directory field indicates the area on
34. ram In the hexified form the file should be transferable over any medium which handles normal text This is the most reliable copy of the executable version of VMS Kermit SsSss lt s NAH DH VMSHEX MAR Source for the hexification program This is the program which was used to produce VMSMIT HEX It can also be used to produce hexified version of any or at least almost any Files 11 file The dehexification program should then be able to reproduce a copy of the original file with the file parameters correctly set Note that the format used for the hexified files is basically Intel hex format There are some additional records used to store the record format etc Also the file name as typed to the prompt from VMSHEX is stored in the hexified version of the file for use by the dehexification program By doing this it is possible to store more than one binary file with a single hexified file VMSDEH MAR Source for the dehexification program VMSV31 Version VMS Kermit the last version that will run under release 3 x of VMS Versions 3 2 and later require VMS release 4 0 or later VMSV3x MEM ocumentation on the changes between releases 3 1 and 3 1 and 3 2 and 3 3 of Kermit 32 and additional installation information OTHER INSTALLATION CONSIDERATIONS As distributed Kermit 32 should work on any VAX VMS system version 4 0 and later Customization is possible with or without a BLISS 32 compiler Default parameter val
35. rious parameters for file transfer or terminal connection You can examine their values with the SHOW command The following parameters may be SET BLOCK_CHECK Packet transmission error detection method DEBUGGING Record or display state transitions or packets DELAY How long to wait before starting to send ESCAPE Character for terminal connection FILE For setting file parameters like file type HANDSHAKE For establishing half duplex line turnaround handshake IBM_MODE For communicating with an IBM mainframe INCOMPLETE_FILE What to do with an incomplete file LINE Terminal line to use for file transfer or CONNECT LOCAL_ECHO For terminal connection ON or OFF MESSAGE The type of typeout to be done during transfers PARITY Character parity to use PROMPT Change the program s command prompt RECEIVE Various parameters for receiving files REPEAT_QUOTE Character to use for repeat compression RETRY How many times to retry a packet before giving up SEND Various parameters for sending files TRANSMIT Control TRANSMIT command echo and delay SET DEBUGGING Syntax SET DEBUGGING options Record the packet traffic either on your terminal or in a file Some reasons for doing this would be to debug a version of Kermit that you are working on to record a transaction in which an error occurred for evidence when reporting bugs or simply to vary the display you get when running Kermit 32 in local mode Options are ON Display each incoming and outgoing packe
36. rmat of the command is SET TRANSMIT ECHO ON or OFF By default the transmit echo is left off and the user sees the number of each line after it has been transmitted With transmit echo on the user sees whatever the remote system would normally echo back to him while he is typing in a file Note that turning the echo on typically slows the file transfer down The SHOW Command Syntax SHOW option The SHOW command displays various information ALL All parameters BLOCK_CHECK_TYPE The block check type being requested COMMUNICATIONS Parameters affecting the terminal line being used for communication DEBUGGING Debugging mode in effect if any DELAY The number of seconds Kermit 32 will delay before starting a SEND or RECEIVE command when in remote mode Page 16 Kermit User Guide VAX VMS KERMIT 1 4 5 ESCAPE The current escape character for the CONNECT processing FILE_PARAMETERS File blocksize type file naming and incomplete file disposition INCOMPLETE_FILE_DISPOSITION The action to take when a transfer is aborted LINE Terminal line in use LOCAL_ECHO Whether characters should be echoed locally when CONNECTed PACKET For incoming and outbound packets PARITY The parity type in use RECEIVE For inbound packets RETRY The number of retries to be done on bad packets SEND For outbound packets TRANSMIT Parameters for TRANSMIT command VERSION The program version number of Kermit 32 1 4 6 Program Management
37. rocomputer Files You can use Kermit to send textual files from a microcomputer or any 8 bit computer system to VAX VMS with no special provisions since Kermit 32 stores incoming files as text files variable length records with implied carriage returns unless it is explicitly told otherwise But Kermit 32 has no automatic way of distinguishing an incoming binary file from an incoming text file You must inform Kermit 32 that a file it is about to receive is to be stored as a binary file This is done using the SET FILE TYPE BINARY command This instructs Kermit 32 to store the data it receives in the file without checking for carriage return line feed sequences The file it creates will be variable record length with no record attributes Each record will contain 510 bytes of data except the last which will contain whatever amount is left before the end of the file This allows Kermit 32 to correctly return exactly the data it was sent when the file is returned to the original system Note that because of the need to use a different file type for binary files it is not possible to use a wildcard send command to send a mixture of text and binary files to a VAX system unless the text files are not intended for use on the VAX rather you must send all text files with Kermit 32 s file type set to ASCH and all binary files with the file type set to binary Once you get the foreign file into the VAX system stored with the correct file type you nee
38. s the mechanism most commonly used to instruct Kermit to send a group of files 1 1 The VAX VMS File System Page 3 Text Files and Binary Files The file system used by VAX VMS provides for a large number of attributes to be associated with each file These attributes provide some indication of whether the file is a text file or is some other type of non text data The two major attributes that affect VMS Kermit are the record type and record attribute The record type describes how logical records are stored in the file Records may be of some fixed length specified by another attribute or variable length specified within each record or stream implying that records if there are any are separated by control characters within the data The record attributes describe how the breaks between records are to be treated For example a record attribute of implied carriage return means that any program reading the file with intentions of printing it should add a carriage return linefeed sequence between each record Other record attributes include FORTRAN carriage control and print file format The most common method of storing text in a file under VAX VMS is to store one line of text per record variable length records with a carriage return linefeed sequence implied by the end of the record implied carriage return This is the method Kermit 32 uses to store files it receives when using FILE TYPE ASCII text Other formats are also u
39. sed to store text under VAX VMS but the one used by Kermit 32 is the only one that is handled correctly by all known utility programs under VAX VMS Also most programs which work with text files the editor EDT for example place some limit on the length of the lines which can be handled Typically this is 255 Kermit 32 can write text files with up to 4095 characters on a line which means a text file from another system may be transferred and stored correctly by Kermit 32 but may still be unusable by certain VAX VMS programs Certain PC applications may create text files with lines even longer than Kermit 32 s maximum Typical examples are the ASCII export procedures of database spreadsheet and CAD packages If you try to send such a file to Kermit 32 the transfer will fail with a message oo KERMIT32 E REC_TOO_BIG Record too big for KERMIT s internal buffer If this happens you can SET FILE TYPE BINARY on the VAX before transferring the file to it You should still be able to use the file as a text file with the above proviso about record length There is no standard format for storing binary files In general any record format with no record attributes can be used for binary files Since programs which work with binary files under VAX VMS expect to see some particular format more information is needed for transfer of binary files than for text files The current version of Kermit 32 is not capable of transferring all
40. subprocess running DCL so that Kermit will keep the connection active Page 6 Kermit User Guide VAX VMS KERMIT 1 4 1 4 Kermit 32 Commands Kermit 32 has the following commands synonym for take BYE to remote server CONNECT as terminal to remote system EXIT from Kermit 32 FINISH Shut down remote server GET remote files from server HELP with Kermit 32 LOCAL prefix for local file management commands LOG remote terminal session LOGOUT remote server PUSH to DCL command level QUIT from Kermit 32 RECEIVE files from remote Kermit REMOTE prefix for remote file management commands SEND files to remote Kermit SERVER mode of remote operation SET various parameters SHOW various parameters STATUS about most recent file transfer TRANSMIT Transmit upload a file with no error checking TAKE Kermit 32 commands from a file 1 4 1 Commands for File Transfer Kermit 32 provides the standard SEND RECEIVE and GET commands for transferring files using the Kermit protocol The SEND Command Syntax SEND filespec The SEND command causes a file or file group to be sent from the VAX to the other system If filespec contains wildcard characters then all matching files will be sent in alphabetical order according to the ASCII collating sequence by name If filespec does not contain any wildcard characters then the single file specified by filespec will be sent Only the most recent generation of a file is sent unl
41. t lengthy OFF Don t display or record debugging information this is the normal mode If debugging was in effect turn it off The debugging information is recorded in the file specified by the most recent LOG DEBUGGING command SET ESCAPE SET ESCAPE octal number Specify the control character you want to use to escape from remote connections back to Kermit 32 The default is 35 Control The number is the octal value 1 to 37 or 177 of the ASCII control character you want to use for instance 2 is Control B 1 4 5 The SET and SHOW Commands Page 13 SET FILE Syntax SET FIL E parameter keyword Establish file related parameters BLOCKSIZE number Specify the record size for incoming files when the file type is set to BINARY FIXED or BLOCK Note that blocksize is a misnomer but one which is commonly used in VMS All VMS disk files have a true blocksize of 512 bytes The Kermit blocksize as well as the blocksize referred to in many VMS commands like BACKUP and help files is really the record size TYPE keyword How Kermit 32 should treat and store the file that is being sent to it i e that Kermit 32 is receiving and in the case of FILE TYPE BLOCK only how it is to read a file it is sending from disk The choices are ASCII BINARY BLOCK and FIXED The BINARY BLOCK and FIXED types use a default record size described below which may be overriden for received files only with
42. tal value is ooo Normally required for communication with half duplex systems like IBM mainframes in linemode SET IBM_MODE Syntax SET IBM_MODE ON or OFF For communicating with IBM mainframes over half duplex linemode connections When IBM_MODE is set to ON Kermit 32 will override the parity and local echo settings and use odd parity local echo on and also enable a handshake character of XON control Q ASCH 021 octal This feature allows Kermit 32 to exchange packets over half duplex connection with systems that wait for an XON before sending data The various features selected by this command can be overridden subsequently by SET PARITY SET LOCAL_ECHO and SET HANDSHAKE commands SET LINE Syntax SET LINE terminal name Specify the terminal name to use for file transfer or CONNECT the terminal name can be up to 255 characters long If you issue this command using other than your job s controlling terminal you will be running Kermit 32 in local mode and you must log in to the remote system and run Kermit on that side in order to transfer a file If you don t issue this command Kermit 32 determines whether it is to run locally or remotely based on the default terminal line found when Kermit 32 is started Kermit 32 uses a list of logical names to determine which terminal should be the default terminal line The first of these names which translates to a terminal which is available i e not allocated by some oth
43. terminal line specified here or in the most recent SET LINE command using the currently set communication parameters local echo parity etc Get back to Kermit 32 by typing the escape character followed by the letter C The escape character is Control Rightbracket by default When you type the escape character several single character commands are possible Send a BREAK signal Close but do not hang up the connection and return to Kermit 32 If a session log is active temporarily Quit logging Resume logging to the session log Show status of the connection Send a null character List all the possible single character arguments or whatever you have set the escape character to be Typing the escape character twice sends one copy of it to the connected host You can use the SET ESCAPE command to define a different escape character and SET PARITY and SET LOCAL_ECHO to change those communication line oriented parameters Type the SHOW LINE command for information about your current communication settings Z2ZPEUROAW Kermit 32 does not have any special autodialer interface It assumes that the connection has already been made and the line assigned If the line has an autodialer attached to it then you can type commands to the autodialer after you CONNECT Page 12 Kermit User Guide VAX VMS KERMIT 1 4 5 1 4 5 The SET and SHOW Commands The SET Command Syntax SET parameter option value Establish or modify va
44. types of binary files which were created on a VAX VMS system to another system and retrieving them intact nor is it capable of transferring all of types binary files created on a VAX VMS system to another VAX VMS P OS or RSX 11M M system intact However certain formats of binary files can be transferred and binary files from some other systems may be transferred to a VAX and recovered intact See the section on the SET FILE command for details Using two programs supplied with Kermit 32 it is possible to transfer almost any type of file between VAXes or between a VAX and a P OS or RSX 11M M system The VMSHEX program converts a binary file to text using a variation on Intel hex format The resulting file can be transferred as an ordinary text file and finally dehexified on another VMS system using the VMSDEH program to reproduce the original file with all the attributes intact Since these text files are about twice the size of the original binary files the transfers take longer On the plus side the text versions of the files can be transferred to any system with a Kermit and still retrieved intact They can also be transferred over 7 bit data paths without any problems The Kermit 32 installation procedure described later makes use of hexified versions of the Kermit 32 binary executable file and VMSDEH to restore it a binary EXE file or task image Page 4 Kermit User Guide VAX VMS KERMIT 1 1 Using the VAX to Archive Mic
45. ues may be changed by changing the appropriate LITERALss in the BLISS 32 source for VMSMSG or the actual values which are stored in the routine MSG_INIT in the MACRO 32 source for VMSMSG Sites can also easily change the commands which are used for processing the generic server functions REMOTE commands when running as a server The text which makes up these commands is in the file VMSGEN MAR along with the text of the REMOTE HELP message This allows a site to make use of local programs for performing some of the commands perhaps using FINGER to perform the WHO command etc If you want to allow your users to assign external terminal lines for connecting to remote systems from the VAX e g by dialing out you will have to configure those lines to allow the desired access Otherwise users will get a message like No privilege for attempted operation when they do a SET LINE command Sample commands for terminal TXAO might include SET PROTECTION W R TXA0 DEVICE or SET PROTECTION W RWLP DEVICE OWNER 1 4 TXAO or SET ACL OBJECT DEVICE ACL IDENTIFIER INTERACTIVE OPTIONS NONE ACCESS READ WRITE TXAO Consult your VAX VMS system manager s manual for the ramifications especially on security of each of these commands Page 22 Kermit User Guide VAX VMS Kermit Page 23 Index Binary Files 6 7 Cancelling a File Transfer 7 CONTIN
46. utable programs like EXE files CP M COM files relocatable object modules OBJ files as well as any text file containing characters with the eighth bit on Kermit 32 will also ask the other Kermit whether it can handle a special prefix encoding for repeated characters If it can then files with long strings of repeated characters will be transmitted very efficiently Columnar data highly indented text and binary files are the major beneficiaries of this technique If you re running Kermit 32 in local mode for instance dialing out from a VAX to another system using an autodialer you should have already run Kermit on the remote system and issued either a RECEIVE or a SERVER command Once you give Kermit 32 the SEND command the name of each file will be displayed on your screen as the transfer begins If the file is successfully transferred you will see OK otherwise there will be an error message During local operation you can type Control A at any point during the transfer to get a brief status report You may also type Control X or Control Z to interrupt the current file or file group The RECEIVE Command Syntax RECEIVE filespec The RECEIVE command tells Kermit 32 to receive a file or file group from the other system If only one file is being received you may include the optional filespec as the name to store the incoming file under otherwise the name is taken from the incoming file header If th
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