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1 @ This command opens an indirect file for command input. It is identical to the TAKE command. The format of the command is: Kermit-11>@ file-specification where 'file-specification' is any valid file specification on the system on which the server Kermit is running. 1 BINARY FILES Binary files are those files which require all eight bits in each character. Text files, like program source files, compiler listing and RUNOFF files, normally use only the low seven bits in each character. Binary files include task images, save images, RMS relative and indexed files and other special types of files. In order for Kermit to transfer these files Kermit-11 needs an eight bit line, which for most PDP-11 systems is the default. Additionally, most Kermits need to be set into a binary mode to transfer such files. The command to do this is usually the 'SET FILETYPE BINARY' command, or 'SET FIL BIN' for short. Since various Kermit implementations are at different stages of developement, most Kermit links can NOT handle binary files automatically, thus the above SET command must be given to BOTH Kermits prior to a binary file transfer. One important note is that the VMS Kermit-32 requires a SET FIL TYP FIX to properly send and receive binary files. For example, a Kermit-11 connected to a VMS system as a local Kermit would first log onto the VAX and invoke Kermit-32 and give the commands SET FIL TYP FIX and SER. Then one would escape back to the Kermit-11 (control c) and give Kermit-11 the command SET FIL BIN (or the same, SET FIL TYP FIX). At this point the Kermit-11 can use the GET and SEND commands to transfer binary files like task images and save images. As a side note, there may be cases where the proper SET commands have been given but the binary file does not transfer correctly. This has been noted on VMS when a task image is copied from tape via FLX to disk and then sent over to a PDP-11 using Kermit. The file was found to contain carriage control after it was sent to the PDP-11. This was because when FLX created it on the VAX, the file was created with fixed 512 records with carriage return control. VMS Kermit honored this and sent a CRLF every 512 bytes. Please note that transfering text files when one or both of the Kermits are set to binary mode can result in an unusable file after transfer because of the possibility of transfering imbedded record control information. Version 2.16 (and later versions) of Kermit-11, however, can do the switch into binary mode automatically if the file attributes (and protection code for RSTS/E) indicate that the file is most likely a binary file. Additionally, two Kermit-11's connected to each other will both do the 'right' thing if this is the case by the sending Kermit-11 telling the receiving Kermit-11 to switch to binary mode. In this case, the sending Kermit-11 will also send a copy of the file attributes over so the receiving Kermit-11 can properly set this when the file is closed. Thus two Kermit-11's connected to each other can send task images, RMS indexed files and so on. 1 BYE The BYE command will cause Kermit-11 (when in local mode) to tell the other Kermit (which should be in server mode) to exit from Kermit and if applicable terminate its job (or process, etc.). When Kermit-11 receives the acknowledgement that this is being done, it will prompt for another command. The DISCONNECT command should always follow the BYE command. The format for BYE is: Kermit-11>BYE 1 COMMAND-LINE Kermit, if the task is installed on RSX11M/M+ or has a CCL name for it for RSTS/E, can get a command from the command-line and execute it immediately. For all commands other than SERVER, Kermit will exit upon completion of the command. In the case of the SERVER command, Kermit will return to interactive mode if the local Kermit sends it a FINISH command. > KERMIT SERVER $ KERMIT HELP 1 CONNECT The CONNECT command will allow you to connect in as a virtual terminal over the line that was specified by the SET LINE command. (Using the CONNECT command before using the SET LINE command will result in an error message.) The terminal line must be one which is accessable to the user. The format of the CONNECT command is: Kermit-11>CONNECT The distributed RSX11M/M+ task has been built with the /PR:0 switch to enable the task to change other terminal settings. Addtionally, for RSX11M/M+, the MCR command SET /SLAVE=TTnn: should be done before entering Kermit-11. If you are running K11POS.TSK on a PRO/350, Kermit will set the line to XK0: and the speed to 9600 by default. Please note that Kermit-11 CANNOT change the speed of a DL11 type interface, nor can it change the speed of a PDT-150 modem port (use SPEED.SAV). The following is an example of using a Racal-Vadic VA212 autodialing modem to log into a remote TOPS-20 system. There are two points at which there is no echoing of the user input. The first is the typing of a control-E <cr> sequence to get the attention of the modem, which responds by sending the string 'HELLO:I'M READY'. The second is the typing of the local 'escape sequence', which by default is control \ followed by a 'C'. The control backslash informs the terminal emulator that the next character is a command. In this case, the command was 'C', which means to return to the local PDP-11 system. Control \ ? would print a help message. $ kermit Kermit-11 V2.13 Kermit-11>set logfile 20.log Kermit-11>set deb console Kermit-11>set lin tt58: Link device set to TT58: Kermit-11>set spe 1200 Kermit-11>con Connecting to TT58: HELLO:I'M READY *d NUMBER? 3 9-1-212-123-4567 9-1-212-123-4567 DIALING... ANSWER TONE ON LINE enter class 4 class 004 start CU20B @log xx.abcdef CU20B, TOPS-20 Monitor 5.1(5101)-2 Job 28, TTY32, 2-Apr-84 4:15:24PM Previous login was 2-Apr-84 4:10:16PM . . . . @log [Confirm] Logged out Job 28, User XX.ABCDEF , TTY 32, at 2-Apr-84 16:19:34, Used 0:00:11 in 0:04:10 Kermit-11>disc KERMIT link TT58: disconnected Kermit-11>exit $ logout 1 COPY The COPY command creates a copy of the input file. The Kermit-11 COPY command does NOT support wildcards in the filename, and while COPY does use multiblock buffering it is usually more efficient to use the system utilty PIP or the DCL command COPY for this. COPY uses RMS block i/o for both RSTS and RSX. Any executable RSTS file (*.TSK, *.BAC and *.SAV) copied will not be useable until it's run time system name and protection code is reset. Kermit-11> COPY From: ABCDEF.DAT To : FUBAR.LST or Kermit-11> COPY ABCDEF.DAT FUBAR.LST 1 CWD The CWD command alters the current device and UIC (PPN) default. Thus, the command 'CWD [200,200]' would cause all following file operations to insert the string [200,200] unless an explicit directory name was given. This is identical to the SET DEF command. Passwords are ignored. 1 DECNET Kermit-11 can access DECnet files if built with DAP support. This is included in the task images K11NRS.TSK and K11RSX.TSK as distributed. DECnet support has been tested for RSX11M. See SET DEFAULT for more information. 1 DELETE The DELETE command will delete the specified file or file group from the system. Wildcards are permitted. Kermit-11>DELETE FUBAR.MAC Kermit-11>DELETE FUBAR.* 1 DIAL The DIAL command will take the number specified and attempt to get the attached modem to dial the phone number. The SET MODEM command must have be used first, except in the case of PRO/TMS. Additionally, if no line has been set, the SET LINE command must be used. Note that for the PRO/350, an implicit SET LINE command is done at startup for XK: or XC:. Once a connection is made, you will be returned to the Kermit-11 command line prompt, at which time you can use the CONNECT command to attach to the remote system. The case of PRO/TMS is special. This is an internal modem, accessed via device XT1:. In this case, the user MUST suplly, in the dial string, any TMS formatting or control characters. The modem type is selected automatically if you do a SET LINE XT0: or SET LINE XT1: 1 DIRECT The DIRECT command will display the current default directory when used in the format: Kermit-11>DIRECT If a directory other than the current default directory is desired then DIRECT may be used in the format: Kermit-11>DIRECT file-specification where 'file-specification' is any legitimate combination of device name, UIC or PPN, and a filename which can include wild-carding characters. 1 DISCONNECT The DISCONNECT command causes Kermit-11 to 'hang-up' the line which was specified with the SET LINE command and connected with the CONNECT command. The format is: Kermit-11>DISCONNECT 1 DISPLAY The Display command will format and print global read/write data, defined in K11MAC.MAC, to the terminal, as in: Kermit-11>DISP PROMPT 1 ERASE The ERASE command will ERASE the specified file or file group from the system. Wildcards are permitted. Kermit-11>ERASE FUBAR.MAC Kermit-11>ERASE FUBAR.* The ERASE command is identical to the DELETE command. 1 EXIT The EXIT command will cause Kermit to return to the command level. This command is the same as the QUIT command. The format is: Kermit-11>EXIT 1 FINISH The FINISH command will tell Kermit-11, which is in local mode, to signal the other Kermit to exit from server mode. When Kermit-11 has received acknowledgement that this is being done, it will prompt for another command. The command format is: Kermit-11>FINISH 1 GET The GET command tells the remote Kermit which is in server mode to get a file or group of files. The format for this command is: Kermit-11>GET file-specification where 'file-specification' may include any legitimate device, PPN or UIC as well as the file specification. Wildcarding may be used in the file-spec. to obtain a group of files. 1 HANGUP The HANGUP command will drop the remote line specified by the SET LINE command and connected by the CONNECT command. This command presumes that the modem cable has the DTR line (pin 20) connected. The same function is performed by the DISCONNECT command. The format of the HANGUP command is: Kermit-11>HANGUP 1 HELP-FILE The Kermit-11 help file (this file) should be located as follows: For RSTS/E, RSX11M/M+ LB:[1,2]K11HLP.HLP or SY:[1,2]K11HLP.HLP or KERMIT:K11HLP.HLP or HELP:K11HLP.HLP For RT11 DK:K11HLP.HLP or SY:K11HLP.HLP For P/OS on the PRO/350 [001002]K11HLP.HLP 1 HOST The HOST command is identical to the SYSTEM command in that it takes the command and spawns a process to execute the command. Kermit-11>HOST SHO TER Current settings for KB6: Broadcast CRFill=0 NoEcho NoHostSync Lowercase NoParity NoScope Speed not settable Tab NoTTSync Width=80 Kermit-11> 1 INTRODUCTION The KERMIT file transfer protocol is intended for use in an environment where there may be a diverse mixture of computers -- micros, personal computers, workstations, laboratory computers, timesharing systems -- from a variety of manufacturers. All these systems need have in common is the ability to communicate in ASCII over ordinary serial telecommunication lines. KERMIT was originally designed at Columbia University to meet the need for file transfer between our DECSYSTEM-20 and IBM 370-series mainframes and various microcomputers. It turned out that the diverse characteristics of these three kinds of systems resulted in a design that was general enough to fit almost any system. The IBM mainframe, in particular, strains most common assumptions about how computers communicate. The KERMIT protocol is specifically designed for character-oriented transmission over serial telecommunication lines. The design allows for the restrictions and peculiarities of the medium and the requirements of diverse operating environments -- buffering, duplex, parity, character set, file organization, etc. The protocol is carried out by KERMIT programs on each end of the serial connection sending "packets" back and forth; the sender sends file names, file contents, and control information; the receiver acknowledges (positively or negatively) each packet. The packets have a layered design, in keeping with the ANSI and ISO philosophies, with the outermost fields used by the data link layer to verify data integrity, the next by the session layer to verify continuity, and the data itself at the application level. Connections between systems are established by the ordinary user. In a typical case, the user runs KERMIT on a microcomputer, enters terminal emulation, connects to a remote host computer (perhaps by dialing up), logs in, runs KERMIT on the remote host, and then issues commands to that KERMIT to start a file transfer, "escapes" back to the micro, and issues commands to that KERMIT to start its side of the file transfer. Files may be transferred singly or in groups. Basic KERMIT provides only file transfer, and that is provided for sequential files only, though the protocol attempts to allow for various types of sequential files. Microcomputer implementations of KERMIT are also expected to provide terminal emulation, to facilitate the initial connection. More advanced implementations simplify the user interface somewhat by allowing the KERMIT on the remote host to run as a "server", which can transfer files in either direction upon command from the local "user" Kermit. The server can also provide additional functionality, such as file management, messages, mail, and so forth. Other optional features also exist, including a variety of block check types, a mechanism for passing 8-bit data through a 7-bit communication link, a way to compressing a repeated sequence of characters, and so forth. As local area networks become more popular, inexpensive, and standardized, the demand for KERMIT and similar protocols may dwindle, but will never wither away entirely. Unlike hardwired networks, KERMIT gives the ordinary user the power to establish reliable error-free connections between any two computers; this may always be necessary for one-shot or long-haul connections. 1 LOCAL The LOCAL command can be used to prefix any Kermit command to insure that the command so prefixed will be carried out by the user's own kermit. All commands are local by default with the exceptions of BYE, FINISH,and GET. The LOCAL command format is: Kermit-11>LOCAL Kermit-command-name 1 LOGFILE The LOGFILE command creates the debug and session logging file. It is identical to the SET LOGFILE command. Kermit-11>LOGFILE FUBAR.LOG 1 Modems The question of how to set one's modem (if applicable) depends on a number of factors. For this discusion, we will be limited to considerations under RSTS/E (and to a limited degree, RSX and P/OS). This discussion is relavent to dialing out from an attached line. Please note that the following comments will not be applicable to all types of modems. 2 RSTS/E RSTS/E does not control modems signals in the manner that RSX or VMS does. VMS always asserts DTR whereas RSTS/E will not assert DTR until the terminal driver can see RCD (also known as DCD) which is pin 8 (eight) for the RS232 connection. If the interface is a DH11 with full modem control, a cable with all signals connected will work fine. However, if the interface is a DZ11 we have the problem that the DZ has only partial modem control. To connect directly to a modem (like a VADIC 212, sorry, no DEC modems here) we must do one of two things: (1) Force the modem (via strapping options or whatever) to assert RCD (DCD) pin 8, thus RSTS/E will see carrier and raise DTR (pin 20 for RS232) (2) Set the terminal to LOCAL (RSTS/E V9 syntax 'SET TER TTxx:/NODIAL/PERM') and break pin 20 (DTR) and connect pin 20 to 8 on the modem side. This will cause the modem to be able to dial out and allow RSTS/E to connect to it. You will also need to have the modem assert RCD, pin 8. Keep in mind that the Kermit-11 command DISCONNECT (or HANGUP) will not function if a line is set to NODIAL (INIT SET syntax 'LOCAL'). This has been tested on a Racal Vadic VA212. For those of you who have port switches such as the Gandalf type, there is one additional problem. For Gandalf, suppose you want to connect a DZ11 line to to an AMTB2. You will have a problem, in that the Gandalf AMTB2 wants to see RCD (DCD) asserted to make a connection. What you may need to do is this: Make a cable for the DZ11 to AMTB2 port as follows: CPU side AMTB2 side 20--| 8---|-----------8 7---------------7 3---------------2 2---------------3 Note that 20 is tied to 8 on the CPU side. Also, 2 is swapped for 3. Then, the Kermit-11 command SET DTR, which forces RSTS to raise DTR for 30 seconds, will cause the DTR signal to loop back to the RCD (DCD) signal and thus tell RSTS that there is carrier detect which will raise DTR (the chicken or egg question) and get things rolling. The Kermit-11 HANGUP (or DISCONNECT) command will drop DTR and force the modem to break the connection. 2 P/OS (Pro 3xx) Under P/OS the author has used (1) a DLV11 line in the 11/23+ at home at 9600 baud without any modem signals, (2) a link using only 2,3 and 7 to a Racal Vadic 3212 (not an autodialer) and (3) a Gandalf LDS125 modem. In all cases there were no problems. It would seem that the PRO/350 comm port does not need the modem signals. This will, of course, mean that the HANGUP (or DISCONNECT) commands will NOT function since DTR is not being passed. Please note that you must ensure that pins 2 and 3 (RXD and TXD) are swapped if you are not using some type of modem (one of the things a NULL modem cable does ). 2 RSX11M/M+ The setting of the connected line (SET LINE TTnn:) depends on the signals that the modem can assert (see HELP MODEM RSTS). Since the author does not run RSX on a system with modem lines (the system is an 11/23+, DLV11 lines), the command SET RSX TC.DLU value has been added (though untested). This command can be used to set the TC.DLU parameter to 1 or 2. A value of one (1) (SET RSX TC 1) is normal for remote lines, indeed, it is the result of the MCR command SET/REMOTE=TTnn:. However, it may be the case that TC.DLU needs to be set to two (2) (SET RSX TC.DLU 2). If this SET command is used, Kermit-11 will alter it (if different from the current setting) and wait five (5) seconds for the change to come into effect. This is only applicable to modem controlled lines. There is no way (at this time) to change the TC.DLU setting to two via MCR or DCL commands (perhaps we need a SET /DIALOUT=TTnn:). For more information, please consult K11USR.DOC 1 MicroRSX Operation under MicroRSX is identical to that under RSX11M+ and, for the most part, P/OS. The image K11POS.TSK is used, as this image is linked to the resident library RMSRES, thus allowing access to named directories under MicroRSX. 1 QUIT The QUIT command will cause Kermit-11 to return to the command level. This command is the same as the EXIT command. The format is: Kermit-11>QUIT 1 PARITY Sometimes two Kermit's may appear to be sending the correct packets but one or the other of them will constantly reject the same packet. This usually will be seen when the requesting Kermit asks a server for a file and then rejects the server's first packet, doing so until the retry threshold is reached. This can often be caused by parity being introduced somewhere, and one or both of the Kermit's do not know this. This can happen when a modem is generating parity or when a private or public network is doing so. Some Kermit's have a SET PARITY command to assist in this. If the communications link is introducing parity, a simple fix is to tell each Kermit the command SET PARITY SPACE. This will force the Kermit program to always remove bit 7 from the incoming data. Normally this will not affect file transfer since many Kermit implementations support what is called eight bit prefixing, which is a method of encoding an eight bit data item to fit over a seven bit link. See HELP SET PARITY for more information. 1 PRINT The PRINT command will cause the specified file(s) to be printed on the system line printer. This command may not function on all systems. 1 PRO/350 2 RT11 version 5.1 Kermit-11 runs under the RT11 version 5.1 XM monitor by using the DIGITAL distributed XC handler. The XC handler supports several useful functions such as start/stop break, variable size reads and driver/line reset. Due to an apparent bug in the driver, Kermit has to use flow control (XON/XOFF) to control the sending Kermit at high speeds (9600 baud). This has the undesireable effect of slowing the transfer down by about 15 percent. This is enabled by typing SET RTFLOW ON. As an alternative, the XC handler can be modified to avoid all problems with buffer overflows by increasing the buffer size in XL.MAC. See the file K11PRT.MAC for information regarding this. Note the the XC handler does not accept .SPFUN calls to change the baud rate, rather, you must set it prior to entering Kermit-11 as in SET XC:SPEED=9600. The Kermit DISCONNECT command will not function. Kermit will always fake a SET LINE XC0: at startup on the PRO/350. Unlike the standard RT11 Kermit-11, you DO NOT need to use the SET RTFLOW ON command to enforce flow control during the CONNECT command. The XC driver handles this automatically for you. To send a BREAK while in CONNECT mode, type your local escape character (normally a CTRL \) followed by a B. 2 P/OS version 2.0 Kermit-11 will run on under P/OS on the Pro/350, the executable file is called K11POS.TSK. It does NOT (and cannot) run from a menu, the normal way to run it is via the RUN command in DCL. It will support the Kermit-11 attribute packets, thus a PRO/350 connected to a PDP-11 host can transparently handle binary and other types of files. The P/OS Kermit-11 can be run either as a local Kermit or a Kermit server. This has been tested under P/OS version 2 connected to both a PDP-11/23+ and PDP-11/70 RSTS/E host. When Kermit-11 is started on the PRO, it will automatically do a SET LINE XK0: and a SET SPEED 9600. You can, of course, change the speed to whatever you need with the SET SPEED command. The line should be left as XK0:. 1 RECEIVE The RECEIVE command will put Kermit-11 into remote mode to wait for a single file transfer transaction. Kermit-11 will wait for a file transfer initialization from the other kermit. This command is useful if the other Kermit does not support local server commands. Command format is: Kermit-11>RECEIVE Please note that this version of Kermit-11 (Version 1) does NOT support the RECEIVE command in the format: Kermit-11>RECEIVE filename 1 REMOTE The REMOTE command is used as a prefix to indicate to Kermit-11 that the command so prefixed is to be executed by the other (remote) Kermit server. Command format: Kermit-11>REMOTE will return a prompt requesting a command name: Remote Kermit cmd ? REMOTE can also be used with a command name as an argument: Kermit-11>REMOTE command-name Please see HELP REMOTE command name for details and HELP SERVER for general Kermit server operation. 2 BYE The REMOTE BYE command will cause Kermit-11 (when in local mode) to tell the other Kermit (which should be in server mode) to exit from Kermit and if applicable terminate its job (or process, etc.). When Kermit-11 receives the acknowledgement that this is being done, it will prompt for another command. The DISCONNECT command should always follow. This command (REMOTE BYE) is the same as the BYE command. The command format is: Kermit-11>REMOTE BYE or Kermit-11>REMOTE Remote Kermit cmd ?BYE 2 COPY The remote copy is just like the local copy command in that it creates a copy of the input file. Like the local Kermit-11 COPY command it does NOT support wildcards in the filename, and while COPY does use multiblock buffering it is usually more efficient to use the system utilty PIP or the DCL command COPY for this. COPY uses RMS block i/o for both RSTS and RSX. Any executable RSTS file (*.TSK, *.BAC and *.SAV) copied will not be useable until it's run time system name and protection code is reset. Kermit-11>REMOTE COPY From: ABCDEF.DAT To : FUBAR.LST or Kermit-11>REMOTE COPY ABCDEF.DAT FUBAR.LST 2 CWD The REMOTE CWD command will cause Kermit-11 to send to the Kermit server the new default directory. If the server is a Kermit-11, passwords are ignored. See HELP CWD and HELP SET DEF for further information. 2 DIRECT The remote DIRECT command will tell the remote Kermit server to send a directory listing over the connection. Not all Kermit servers have this implemented. Kermit-11>REM DIR *.MAC The above example would tell the remote server to send a directory listing of all files ending with a .MAC filetype. 2 ERASE The remote ERASE command will tell the remote Kermit server to delete any files matching the file specification. For a Kermit-11 server, this can include wildcard characters. Kermit-11>REM ERASE *.MAC Files deleted: SY:[2,2]FUBAR.MAC SY:[2,2]HLPSUB.MAC Kermit-11> The remote Kermit server may respond with the filenames deleted, the above example is what a Kermit-11 server would respond with. 2 FINISH The REMOTE FINISH command will tell Kermit-11 , which is in local mode, to signal the other Kermit to exit from server mode. When Kermit-11 has received acknowledgement that this is being done it will prompt for another command. REMOTE FINISH is the same as the FINISH command. The command format is: Kermit-11>REMOTE FINISH or Kermit-11>REMOTE Remote Kermit cmd ?FINISH 2 GET The REMOTE GET command tells the remote Kermit which is in server mode to get a file or group of files. REMOTE GET is the same as the GET command. The format for this command is: Kermit-11>REMOTE GET or Kermit-11>REMOTE Remote Kermit cmd ?GET 2 HELP The REMOTE HELP command instructs a remote Kermit server to send a list of remote commands that it can process. 2 HOST The REMOTE HOST command sends the comamnd over to the remote Kermit for execution on that system. This is only currently supported for version 8.0 of RSTS/E, and will be supported for RSX11M-Plus in the near future. Kermit-11>REM HOST SHO DEV Busy Devices: Device Job Why KB12 18 AS PK0 29 Open PK1 8 AS PK2 5 AS+Open SH0 2 Open FE0 14 AS+Open Disk Structure: Dsk Open Size Free Clu Err Name Level Comments DK1 0 4800 640 13% 4 0 BRIAN4 1.1 Pri, DLW, Lck DB0 23 171796 33944 19% 4 0 SYSPAC 1.1 Pub, DLW DB1 3 171796 15948 9% 4 0 WORK1 1.1 Pri DB2 53 131648 7344 5% 4 0 SYSLIB 1.1 Pri, DLW Kermit-11> 2 RENAME The remote RENAME command is used to rename a file or set of files. RENAME is used with two arguments in the format: Kermit-11>REMOTE RENAME oldname newname If the remote RENAME is used with one or no argument it will prompt for missing arguments: Kermit-11>REMOTE RENAME From: oldname To: newname When the remote RENAME is finished the remote Kermit server will most likely return either a list of files renamed or a count of the number of files renamed. For a Kermit-11 server running remotely you would get a count of the number of files renamed. Kermit-11>REMOTE RENAME t.* junk Remote ack: 3 files renamed 2 SPACE The REMOTE SPACE command sends a generic command to the remote Kermit requesting information about the amounts of space available and space used on the remote host. Command format is: Kermit-11>REMOTE SPACE or Kermit-11>REMOTE Kermit Remote cmd ?SPACE 2 TYPE The REMOTE TYPE command is just like the TYPE command but it tells a remote Kermit server to get the file to be typed on your terminal and send it over. Kermit-11>REMOTE TYPE FUBAR.MAC 2 WHO The REMOTE WHO command instructs a remote Kermit server to send a listing of who's logged into the system. This is currently only operational for Kermit server running under RSTS/E. Please note that this command may be restricted by the system manager. Kermit-11>REMOTE WHO 1 RENAME The RENAME command is used to rename a local (only) file. RENAME can be used with two arguments is the format: Kermit-11>RENAME oldname newname If RENAME is used with one or no argument it will prompt for missing arguments: Kermit-11>RENAME From: oldname To: newname When RENAME is finished it will return a 'report' of what it has done: Kermit-11>RENAME t.* junk File DB0:[1,8]T.T1 renamed to DB0:[1,8]JUNK.T1 File DB0:[1,8]T.T renamed to DB0:[1,8]JUNK.T 1 RESTRICTIONS Prior to version 2.21, Kermit-11 did not support 8-bit prefixing. Prior to version 2.23, Kermit-11 did not support repeat character encoding. The PRO/RT11 version of Kermit-11 will request 8-bit prefixing due to the fact that the XC handler does not support 8BIT data. For most Kermits this should not be a problem. The XC handler always strips bit 7 from the character being sent, so the PRO/RT11 version of Kermit will request prefixing of such. It does so internally by setting PARITY to SPACE (always clear the high bit, bit seven). 1 RSTS Kermit-11 runs on version 7.2 or later of RSTS/E. Due to options present in version 8, binary file transfers will not be possible under version 7.2 of RSTS/E. This is due to the use of 8 bit mode for the terminal link to allow all characters to be passed. The so called '8BIT' termianl setting was new as of version 8.0-06 of RSTS/E. Any RSTS/E system running Kermit-11 will need the sysgen option for multiple private delimiters in the terminal driver. This special mode is needed since the 'normal' RSTS/E binary terminal mode has a 'feature' that disables binary mode whenever the terminal times out on a read. Since timeouts are essential to Kermit error recovery, binary mode can not be used for i/o. Certain functions of Kermit-11 require that the system manager install Kermit with temporary priviledges, these commands are the SYSTEM, WHO and REMOTE HOST commands. Kermit-11 does NOT need these to operate correctly. Kermit-11 can only be built under RSTS/E version 8.0 or later due to the use of RMS-11 V2.0 and new assembler directives. 1 RSX11M/M+ Kermit-11 cannot be installed non-checkpointable due to an apparent RMS-11 bug. In other words, don't try to install the task '/CKP=NO'. To use the CONNECT command effectively, typeahead support is needed in the terminal driver. For RSX11M+, set the typeahead buffer size high, as in SET /TYPEAHEAD=TT22:200. Also, if your CONNECT line is TT22: (as above), use the mcr command SET /SLAVE=TT22: Kermit-11 can only be built under RSX11M version 4.1 or later, or under RSX11M-Plus version 2.1 or later due to the use of RMS-11 v2.0 and new assembler directives. There is a SET RSX command, see HELP SET RSX for further information. As a side issue, please note that the file K11POS.TSK is quite usable under RSX, the difference being that K11RSX.TSK has DECnet support and RMS-11 overlayed in the task image (besides which, due to the lack author's systems running RSX may not be up to date) linked into it, whereas K11POS has NO DECnet support but IS linked to the RMS-11 library RMSRES (V2), thus K11POS saves disk space as well as supporting named directories, ala VMS style. 1 RT11 Kermit-11, as of version 2.20, has been tested under RT11 version 5.0 under the FB and XM monitors using a DZ11 line for the link, and also on a PDT-150 using the modem port for the link. It has additionally been run under Micro-11's and the PRO/350 using the XL and XC handlers respectively. As of Kermit-11 v2.39, RT11 users can use a SET LIN TT:, which will force Kermit-11 to use the CONSOLE port for all I/O, with the restriction that CONSOLE port I/O must request 8bit prefixing for the transfer of BINARY data. Additionally, if the RT11 system lacks both MT service and the XL/XC handler, Kermit-11 will use the console by default. Kermit-11 requires .TWAIT support as well as multiple terminal support. The use of multiple terminal support allows Kermit-11 to use any type of interface sysgened, including the DZ11 and DZV11. The exceptions for MT support and/or XC/XL support are noted above regarding console only usage. It is possible under version 5 of RT11 to use the XL: handler instead of the multiple terminal support. The use of the XL: driver will result in much faster file transfer at high baud rates. Note that XL: must be set up at system startup or at some time later to set the proper speed, CSR and vector. For PRO/RT11 information, see HELP PRO RT11. Please note that the device name syntax for terminal lines follows the MT unit numbers, thus if a SHO TER gave unit 5 for DZ11 line 0 the the device name would be: Kermit-11>SET LINE 5 If you must use the console port: Kermit-11>SET LIN TT: If you use the XL handler, you would do this: Kermit-11>SET LINE XL: Additionally, Kermit-11 for RT11 looks for its help file, K11HLP.HLP, on DK: first and then on SY: if the first one fails. Full wildcarding is supported for RT11, in the form *.type, name.*, *.* and the % character to match any single character. Kermit-11 can only be built on RT11 version 5.0 or later due to the use of new assembler directives. Please note that for the CONNECT command under RT11 and the use of the MT service, you will most likely need XON/XOFF flow control to be generated by Kermit-11. This is enabled with the SET RTFLOW ON command. This is by default OFF since the modem the author uses, a Vadic 212LS, can't handle XONs and XOFFs while in command mode. The solution here is to escape back to Kermit command mode after the remote system has been logged into, and then type SET RTFLOW ON. Due to overlaying constraints, the RT11 Kermit-11 will not accept wildcards for the RENAME and DELETE commands and the REMOTE server equivalents. The executable files are K11XM.SAV for the XM system and PRO/350, and K11RT4 for the FB system. For notes regarding hardware, see K11USR.DOC 1 SEND The SEND command will allow the user to send a file(s) to the other Kermit. If Kermit-11 is running in remote mode the file will be sent on the controlling terminal line after waiting the number of seconds specified by the SET DELAY command. This gives the user time to escape to the other Kermit and issue a receive command. If Kermit-11 is running in local mode , the file will be sent immediately on the terminal line specified by the SET LINE command. Format of the SEND command is: Kermit-11>SEND file-specification Where 'file-specification' can include device, PPN, or UIC, as well as the file-spec. which may use wildcarding. 1 SERVER The SERVER command will put Kermit-11 into server mode. When Kermit-11 is in server mode while running as a remote Kermit (transmitting over the controlling terminal line) the other Kermit can issue server commands to send and receive files without having to give SEND or RECEIVE commands to Kermit-11. In order to correctly receive binary files while in server mode a SET FILETYPE BINARY must be done first. At this time there is no way for Kermit-11 to determine whether an incomming file is ASCII or binary. Command format is: Kermit-11>SERVER At this time, the Kermit-11 server can process the following commands: BYE Logout Kermit-11. REMOTE COPY Copy a file to another. REMOTE DIR Prints a directory out. REMOTE DISK Prints the disk space. REMOTE ERASE Delete the filename(s). FINISH Exits Kermit-11 server. GET Sends the filename(s). REMOTE HELP Prints this help text. REMOTE HOST Execute a host command. REMOTE RENAME Rename old file to new. REMOTE SPACE Prints the disk space. REMOTE TYPE Prints the filename(s). REMOTE WHO Shows users logged in. 1 SET The SET command is used to set various parameters in Kermit. The format of the SET command is: Kermit-11>SET parameter keyword 2 ATTRIBUTES Part of the Kermit protocol is the support of file attributes. Connected Kermits that support this can send information to each other about file size, time/date of creation, RMS file headers and other useful things. Due to potential problems with incompatible implementations this feature can be disabled. In this case, the sending Kermit-11 will never try to send file attributes, even though the receiver may have indicated that it supports this. Kermit-11>SET ATTRIBUTES OFF Kermit-11>SET ATTRIBUTES ON Kermit-11>SET NOATTRIBUTES 2 BAUD This is the same as SET SPEED. See HELP SET SPEED 2 BINARY-TYPE Kermit-11 has a default list of filetypes that are scanned to decide if a file should be sent in binary mode in addition to checking file attributes for RSX, P/OS and RSTS/E. The user can, however, overide this list with the this command. The default list is fairly inclusive, with types such as .SAV and .TSK forcing Kermit-11 into binary transmission. See HELP SET FIL for the default list. Kermit-11> SET BINARY-TYPE .SAV Kermit-11> SET BIN .EXE 2 BLOCK-CHECK The SET BLOCKCHECK command is used to determine the block check sequence which will be used during transmission. The block check sequence is used to detect transmission errors. There are three types of block check available. These are the single character checksum (default), the two character checksum, and the three character CRC (cyclic redundancy check). This command does not ensure that the desired type of block check will be used, since both Kermit's involved in the transfer must agree on the block check type. Kermit-11 will request that the type of block check set by this command be used for a transfer. If the other Kermit has also had the same block check type requested, then the desired block check type will be used. Otherwise, the single character checksum will be used. The command should be given to BOTH Kermits since Kermit-11, when in server mode, has no say about what kind of checksum it wants to use. (See Kermit protocol manual for more information.) Kermit-11>SET BLOCK_CHECK keyword Kermit-11>SET BLO 1 Kermit-11>SET BLO 2 Kermit-11>SET BLO 3 Where keyword is one of: 1_CHARACTER_CHECKSUM or ONE_CHARACTER_CHECKSUM 2_CHARACTER_CHECKSUM or TWO_CHARACTER_CHECKSUM 3_CHARACTER_CRC_CCITT or THREE_CHARACTER_CRC_CCITT 2 CONSOLE The SET CONSOLE command is used under P/OS to control the passing of 8 bit data to th terminal during the CONNECT command. If you are getting multinational characters being printed, this is a very useful thing to set. The default is SET CON 7. Kermit-11>SET CON 8 Kermit-11>SET CON 7 2 DEBUG The SET DEBUG command is used to specify the type and level of debugging to a disk file . This disk file must have been created by the SET LOGFILE command. The format for SET DEBUG is: Kermit-11>SET DEBUG qualifier Kermit-11>SET NODEBUG 3 ALL SET DEBUG ALL will turn on logging for CONSOLE, CONNECT, FILE, PACKET and STATE to the disk file specified by SET LOGFILE. This command is the same as SET DEBUG ON. The command format is: Kermit-11>SET DEBUG ALL 3 CONSOLE SET DEBUG CONSOLE will turn on logging for all I/O during a remote CONNECT to the disk file specified by SET LOGFILE. This command is the same as SET DEBUG CONNECT. The command format is: Kermit-11>SET DEBUG CONSOLE 3 CONNECT SET DEBUG CONNECT will turn on logging for all I/O during a remote CONNECT to the disk file specified by SET LOGFILE. This command is the same as SET DEBUG CONSOLE. The command format is: Kermit-11>SET DEBUG CONNECT 3 FILE SET DEBUG FILE will log all file 'opens' and 'creates' to the file specified by SET LOGFILE. The command format is: Kermit-11>SET DEBUG FILE 3 HELP SET DEBUG HELP gives the user a list of all qualifiers which can be used with SET DEBUG. Command format is: Kermit-11>SET DEBUG HELP 3 NONE SET DEBUG NONE turns off all debugging. This is the same as the SET DEBUG OFF command. Command format is: Kermit-11>SET DEBUG NONE 3 OFF SET DEBUG OFF turns off all debugging. This is the same as the SET DEBUG NONE command. Command format is: Kermit-11>SET DEBUG OFF 3 ON SET DEBUG ON will turn on logging for CONSOLE, CONNECT, FILE, PACKET and STATE to the disk file specified by SET LOGFILE. This command is the same as SET DEBUG ALL. The command format is: Kermit-11>SET DEBUG ON 3 PACKET SET DEBUG PACKET will turn on logging of all receive and transmit packets to the disk file specified by SET LOGFILE. The command format is: Kermit-11>SET DEBUG PACKET 3 STATE SET DEBUG STATE will turn on logging of all internal Kermit-11 state transitions 2 DELAY The DELAY parameter is the number of seconds to wait before sending data after a SEND command is given. This is used when Kermit-11 is running in remote mode to allow the user time to escape back to the other Kermit and give a RECEIVE command. Kermit-11>SET DELAY number-of-seconds Where number of seconds is the (decimal) number of second to wait before sending data. 2 DEFAULT The DEFAULT parameter allows you to specify a device and UIC (or PPN) for all subsequent file opens (for SENDING) and file creates (for RECEIVING). It is disabled by typing SET HOME. Kermit-11>SET DEFAULT device Kermit-11>SET DEFAULT DB2:[200,201] This is quite useful for Kermit-11 running on a DECnet link, as you can set the default for file operations to include node names and passwords as in: Kermit-11>set def orion::sys$system:[fubar] 2 DIAL The SET DIAL command is used to configure an undefined modem type to enable the DIAL command to function. Since the discussion of SET DIAL is quite involved, please consult the Kermit-11 User's Guide for further information. The following commands are supported by Kermit-11 for the SET DIAL command: Kermit-11>SET DIAL WAKEUP string Kermit-11>SET DIAL WAKE_STRING string Kermit-11>SET DIAL PROMPT string Kermit-11>SET DIAL INITIATE string Kermit-11>SET DIAL FORMAT string Kermit-11>SET DIAL SUCCESS string Kermit-11>SET DIAL INFORMATION string Kermit-11>SET DIAL FAILURE string Kermit-11>SET DIAL CONFIRM string Kermit-11>SET DIAL WAKE_RATE delay Kermit-11>SET DIAL DIAL_RATE delay Kermit-11>SET DIAL DIAL_PAUSE string 2 DUPLEX The DUPLEX parameter controls whether an outgoing link (set via the SET LINE command) is a full duplex link (the default) or a half duplex link. All it does for half duplex is to cause all characters typed after the CONNECT command to be echoed locally. Kermit-11>SET DUPLEX HALF Kermit-11>SET DUPLEX FULL 2 END-OF-LINE The END-OF-LINE parameter sets the ASCII character which will be used as a line terminator for all packets SENT to the other KERMIT. This is normally not needed for most versions of KERMIT. Kermit-11>SET END-OF-LINE octal-value-of-character 2 ESCAPE This command will set the escape character for the CONNECT processing. The command will take the octal value of the character to use as the escape character. This is the character which is used to "escape" back to Kermit-11 after using the CONNECT command. It defaults to control (octal 34). It is usually a good idea to set this character to something which is not used (or at least not used very much) on the system being to which Kermit-11 is CONNECTing. Kermit-11>SET ESCAPE octal-character-value Where octal-character-value is the ASCII value of the character to use as the escape character (in octal). 2 FILETYPE This command will set the file type that Kermit is receiving. A file type of ASCII should be used to receive text files which are to be used as text files on the PDP-11 system. The file type BINARY should be used for binary files, such as CP/M .COM files, which need to be kept in a format that allows the file to be returned without any changes. Kermit-11>SET FILE_TYPE type Kermit-11>SET FIL BIN 3 ASCII File type ASCII is for text files. 3 AUTO Kermit-11 will normally try to decide if a file must be sent in binary mode based on the file attributes and filetype. If, for instance, the directory entry for FUBAR.TXT showed it to be RMS (or FCS) fixed length records, Kermit-11 will switch to binary mode and send it verbatim. If the receiving Kermit is Kermit-11, then the sending Kermit will send attribute data over also. The following file types also will normally be sent as binary files unless you use the SET FILE NOAUTO command. *.TSK ; rsx, ias, and rsts tasks *.SAV ; rt11 and rsts save images *.OBJ ; compiler and mac output *.STB ; tkband link symbol tables *.CRF ; tkb and link cross reference files *.TSD ; 'time shared dibol' for rt11 *.BAC ; rsts basic+ 'compiled' files *.OLB ; rsx, ias, and rsts object libraries *.MLB ; rsx, ias, and rsts macro libraries *.RTS ; rsts/e run time systems *.EXE ; vms executable 3 BINARY File type BINARY is for non-text files. Note that binary files which are generated on a PDP-11 system cannot be transferred to another (non PDP-11) system without losing file attributes. This means that (for example), an RMS-11 indexed file cannot be transmitted with Kermit-11 at this time. You can not have parity set to anything but NONE to use binary file transfer (see HELP SET PARITY) unless the other Kermit can process eight bit quoting. Two Kermit-11's connected to each other will use binary transmission automatically via the Kermit attribute packets, preserving file attributes where it makes sense (ie, RSTS/E and RSX only). 3 FIXED SET FIL FIXED is the same as SET FIL BIN 3 NOAUTO SET FILE NOAUTO disables Kermit-11 from trying to base binary transmission mode on file attributes or filetype. 3 PROTECT See HELP SET FILE SUPERCEDE for information. 3 SUPERCEDE SET FILE [NO]SUPERCEDE allows Kermit-11 to accept or reject files received (from either the RECEIVE or GET commands) on a per file basis. The default is SUPERCEDE. By doing SET FILE NOSUPERCEDE Kermit-11 will always check to see if the file to be created is already there (independent of version number) and reject it to the sending server if it exists. This presumes that the Kermit sending the file understands the protocol to reject one file of a (possibly) wildcarded group of files. The main use of this is to resume getting a group of files, as in GET KER:K11*.* or GET KER:MS????.* having lost the connection after transfering some of the files. If this is set, then any files already transfered will not be transfered again. Kermit-11>SET FILE SUPERCEDE Kermit-11>SET FILE NOSUPERCEDE 3 TEXT SET FIL TEXT is the same as SET FIL ASCII 3 TYPE The SET FILE TYPE xxx command is the same as the SET FILE xxx command. The keyword TYPE is ignored for compatibility with other implementations of Kermit. 2 HANGUP SET HANGUP is the same as the DISCONNECT command. It forces a connected line (specified via the SET LINE command) to be dropped. This is currently only supported for RSTS version 8. Kermit-11>SET HANGUP 2 HOME SET HOME resets the default device and UIC (or PPN) to nothing, ie, all file opens and creates use your default disk (SY:) and your UIC (or PPN). Kermit-11>SET HOME 2 IBM-MODE The SET IBM ON (or OFF) will instruct Kermit-11 to wait for an XON following each packet sent to an IBM host. Since the default for IBM mode may not always be appropiate for your IBM compatible system, you can always use the SET HANDSHAKE XON and SET DUPLEX HALF to avoid the parity setting implied by using IBM mode. .lit Kermit-11>SET IBM ON Kermit-11>SET IBM OFF 2 LINE The SET LINE command sets the terminal name up for use with the CONNECT command. To use this you must have access to that device. On many systems terminal lines other than your own are protected from access, and may require special procedures to access them. The form of the device name is TTnnn:, where 'nnn' is a decimal number for RSTS and an octal number for RSX11M/M+. For RT11, the device name is simply the MT unit number shown by the SHO TER command, as in '5' for DZ11 unit 0 line 4. If you are running K11POS.TSK for P/OS on the PRO/350, Kermit-11 will set the line to XK0: and the speed to 9600 baud when Kermit starts. To override the line or speed, set HELP SET LINE and HELP SET SPEED. As of Kermit-11 v2.39, RT11 users can use a SET LIN TT:, which will force Kermit-11 to use the CONSOLE port for all I/O, with the restriction that CONSOLE port I/O must request 8bit prefixing for the transfer of BINARY data. Additionally, if the RT11 system lacks both MT service and the XL/XC Kermit-11 will use the console by default. Kermit-11>SET LINE TT55: (for RSTS and RSX) Kermit-11>SET LINE 5 (for RT11) Kermit-11>SET LINE XK0: (for P/OS) Kermit-11>SET LINE XL: (for RT11) See HELP CONNECT, HELP SET DUPLEX and HELP SET SPEED for more information. 2 LOGFILE The SET LOGFILE command creates a debug dump file for you. It must be used BEFORE any SET DEBUG commands can be used. See HELP DEBUG for further information about debugging modes. Kermit-11>SET LOGFILE MYLOG.TXT Created debug file MYLOG.TXT Kermit-11> 2 MODEM The SET MODEM command is used to establish the type of modem you are using for the DIAL command. If the type of modem is not currently supported, the DIAL command will not function. As of this writing, 27-Jan-85, the Racal Vadic VA212PA, VA212PAR, generic VA3400 with autodialler option, Digital DF112, MicroCom SX1200, Rixon R212A, PRO/TMS and Hayes modems are supported. The older VADIC 3212 and 34xx modems with autodialing options should also function via SET MODEM VADIC. The following modems are defined. The DF200 and DF03 types have not been tested. Kermit-11>SET MOD VA212PA Kermit-11>SET MOD VA212PAR Kermit-11>SET MOD VADIC Kermit-11>SET MOD DF03 Kermit-11>SET MOD DF100 Kermit-11>SET MOD DF200 Kermit-11>SET MOD HAYES Kermit-11>SET MOD MICROCOM Kermit-11>SET MOD R212A Kermit-11>SET MOD PROTMS An implcit SET MOD PROTMS is done if the line is XTn: and the modem type is undefined under P/OS on the PRO/350. 2 PACKET-LENGTH You can alter the default transmitted packet length with the SET PACKET-LENGTH command. This should not normally be needed unless the line is very noisy, at which time you should probably give up anyway. Kermit-11>SET PACKET 60 2 PARITY This is used with the SET LINE and CONNECT commands to specify the type of parity for the remote link. It defaults to NONE and can be either ODD, EVEN, MARK or SPACE as in: Kermit-11>SET PARITY NONE Kermit-11>SET PARITY ODD Kermit-11>SET PARITY EVEN Kermit-11>SET PARITY MARK Kermit-11>SET PARITY SPACE All parity generation is done via software, no special hardware is used. The use of software parity generation is restricted to 8 bit links only. The character format, if parity is set to anything but NONE, will be 7 bits of data followed with high bit set or cleared to indicate the parity. If you set parity to anything but NONE (the default) you can NOT, at this time, send binary files. Attempting to set parity if the FILETYPE is BINARY will result in an error (SET FILETYPE qualifier). 2 PAUSE PAUSE tells Kermit to wait the specified number of seconds between each packet being sent to the other Kermit. This may be useful under situations of heavy system load. This may be automatically computer by Kermit-11 in a future release as a function of line speed. Kermit-11>SET PAUSE 1 2 PHONE Currently, the SET PHONE command supports the NUMBER option, as in: Kermit-11>SET PHONE NUMBER WORK 5374411 This allows Kermit to associate a tag name with a phone number for the DIAL command; in the above example: Kermit-11>SET MOD VADIC Kermit-11>DIAL WORK This would cause Kermit-11 to translate WORK to 5374411 and dial it. See the Kermit-11 User's Guide for further information. 2 PROMPT The SET PROMPT command is useful if you are using two Kermit-11's to talk to each other. By using the SET PROMPT command, you can change the prompt from 'Kermit-11>' on either (or both) Kermit to something that would indicate which system you are currently connected to. Kermit-11>SET PROMPT KERMIT-11/1170> Kermit-11>SET PROMPT FUBAR> Kermit-11>SET PROMPT PROKERMIIT-11> 2 RANDOM This command allows Kermit-11 to randomly generate checksum errors for testing error recovery of an attatched Kermit. You would normally never use this command. Another command that goes with it is called SET SEED value which starts the pseudo-random number generator at a different point. Kermit-11>SET RANDOM ON Kermit-11>SET RANDOM OFF 2 RECEIVE Currently the SET RECEIVE and SET SEND basically work the same in that they only alter the END-OF-LINE character and the START-OF-PACKET value, as in: Kermit-11>SET REC START 2 Kermit-11>SET REC END 12 3 END-OF-LINE This instructs Kermit-11 to expect something other than the default carriage return (octal 15) at the end of a packet. Kermit-11 will ignore packet terminators. The SET SEND END command is of more use in conditioning outgoing packets. 3 START-OF-PACKET The normal Kermit packet prefix is Control-A (1); this command changes the prefix Kermit-11 expects on incoming packets. The only reasons this should ever be changed would be: Some piece of equipment somewhere between the two Kermit programs will not pass through a Control-A; or, some piece of of equipment similarly placed is echoing its input. In the latter case, the recipient of such an echo can change the packet prefix for outbound packets to be different from that of arriving packets so that the echoed packets will be ignored. The opposite Kermit must also be told to change the prefix for its inbound packets and the prefix it uses on outgoing packets. Kermit-11>SET REC START-OF-PACKET 2 3 PACKET-LENGTH SET RECEIVE PACKET-LENGTH This command has two functions. The first, and normal one, is to reduce incoming packet lengths in the event that normal sized Kermit packets can not be passed through the communications circuit. There could be, perhaps, some 'black box' somewhere in the link that has a very small buffer size; this command could be used to reduce the size that the SENDING Kermit will use. The other use is to enable a new protocol extension to Kermit called 'LONG PACKETS'. The actual protocol is documented elsewhere, let's just say that this is a way for two Kermit's to use packet sizes far greater than the normal ('Classic') packet size of 90 characters or so. The main use of this feature is in file transfer over links that introduce considerable delay, it is not uncommon for packets to incur an one to two second delay. The net result is a VERY slow running Kermit with an effective speed of perhaps 300 to 600 baud rather than 1200 or 2400 baud. By making the packets longer, we raise the effective speed of such a circuit. The main restriction on the packet size chosen is the link, a given circuit may not pass 500 character packets. Also, BOTH Kermits must support this extension to the protocol, they will always negotiate it before any file transfer. See the notes at the end of this document for more information. Kermit-11>SET REC PAC 50 Kermit-11>SET REC PAC 600 It is HIGHLY recommended that you use the CRC block check, as the default type one checksum could be inadequate for such long packets, as in: Kermit-11>SET BLO 3 2 POS (P/OS on the PRO/350) The currently available options on the SET command for the PRO/3x0 under P/OS version 2 are: Kermit-11>SET POS DTE Kermit-11>SET POS NODTE The DTE option tells Kermit-11 to attempt to spawn PRO/Communications (DTE) as the CONNECT code; this allows the use of the 'grey keys' SETUP to set terminal emulation characteristics, and the use of the 'EXIT' key to return to the Kermit-11 command level. The 'SET POS DTE' command enables the attempt to call PRO/COMM, whereas the 'SET POS NODTE' enables the builtin terminal emulation. 2 RECORD-FORMAT Kermit will, by default, create RMS-11 variable length implied carriage control records for text files. You can override this and change it to create stream ascii records with the SET RECORD-FORMAT STREAM command. This is useful for RSTS/E systems if you need file compatibility with BASIC-Plus. Kermit-11>SET RECORD-FORMAT STREAM Kermit-11>SET RECORD-FORMAT VARIABLE This command would be most useful in a KERMIT.INI file, which is executed by KERMIT when Kermit starts. 2 RETRY SET RETRY value tells Kermit to try that many times on a NAK'ed packet before giving up. This should only be needed if the line is extremely noisy or the PDP-11 host is running very slowly due to the system load. Kermit-11>SET RETRY 10 2 RSX The SET RSX command is intended to deal with the peculiarities oft found with RSX systems. There are currently three SET RSX commands, as in: Kermit-11>SET RSX FASTIO Default for packet reading, waits for <CR>. Kermit-11>SET RSX CHARIO Read one char at a time for packet reading. Kermit-11>SET RSX TC.DLU n Alters the TC.DLU setting. Kermit-11>SET RSX CONNECT ALT Uses a new (v2.33) CONNECT driver which bypasses TTDRV flow control. Kermit-11>SET RSX CONNECT DEF Use old CONNECT code (2.32) 2 RT11 3 CREATE-SIZE The SET RT11 CREATE value command was added to assist those RT11 users with very small disks to be able to get files with sizes greater that half of the availble contiguous space availble. While this is NOT a problem going from one Kermit-11 to another Kermit-11 since the PDP-11 Kermit supports a subset of the protocol known as 'ATTRIBUTES', other Kermits may not support the exchange of file sizes (most do not). Thus if your largest contiguous space is 300 blocks and you want to get a 250 block file, the command: Kermit-11>SET RT11 CRE 250 would be needed, as RT11 by default only allocates 50 percent of the available space. 3 FLOW-CONTROL Note that for the CONNECT command under RT11 you will most likely need XON/XOFF flow control to be generated by Kermit-11. This is enabled with the SET RT11 FLOW command. This is by default NOFLOW since the modem the author uses, a Vadic 212LS, can't handle XONs and XOFFs while in command mode. The solution here is to escape back to Kermit command mode after the remote system has been logged into, and then type SET RT11 FLOW. The effect of SET RT11 FLOW is for Kermit-11, when in CONNECT mode, to send an XOFF to the host every eight characters. When the loop in the CONNECT module finds no more data in the input buffer, it sends up to 2 XON characters (in case the first XON got lost) to tell the remote system to start sending again. The reason for doing so is that the RT11 multiple terminal service is very slow about handling input interupts and does not do any of it's own flow control when it's internal ring buffer gets full. This has been tested at line speeds up to 4800 baud without losing data. This setting should not be needed for use with the XC/XL handlers. SET RT11 FLOW has NO effect on packet transmission, since the Kermit packet size is never mode than 96 characters, and the RT11 input buffer is 134 chararcters in size. Kermit-11>SET RT11 FLOW Kermit-11>SET RT11 NOFLOW 3 VOLUME-VERIFY Normally RT11 Kermit-11 will check the directory header of a disk to verify that it most likely contains a valid RT11 file structure before trying to read the directory. If for some reason your disk does not contain the standard data at offset 760 in the header, Kermit-11 will reject the disk. The SET RT11 NOVOL command will instruct Kermit-11 to bypass that check. Kermit-11>SET RT11 VOL Kermit-11>SET RT11 NOVOL 2 SEND The SET SEND command controls what Kermit-11 will be doing for outgoing packets in that you may want to alter the packet terminator and/or the start of packet character (by default, 15 octal and 1 octal respectively. See HELP SET RECEIVE for more information. 2 SPEED SET SPEED value sets the line speed for the device specified via the SET LINE command, and used for the CONNECT command. Changing the speed of a terminal line requires privilege for RSTS and RSX11M/M+. The SET SPEED command will only function with a DH11, DHV11, DZ11 or DZV11 multiline interface. Kermit-11>SET SPEED 1200 1200 Baud would be a normal speed to use with a VA212LS or a DF03. Please note that Kermit-11 CANNOT change the speed of a DL11 type interface, nor can it change the speed of a PDT-150 modem port. For a PDT-150 modem port, use a command of /M/S:nnnn. to change the speed to nnnn for the SPEED.SAV program. 2 START-OF-PACKET The SET START octal-value tells Kermit-11 to expect and also to send as the start of packet character the specified character instead of the default Control-A (octal 1). Note that both Kermit's must support this command (or SET RECEIVE/SEND START value) as it is not possible for two Kermit's to negociate this. This set command is the same as doing both a SET REC START n and SET SEND START n. Kermit-11>SET START 2 Kermit-11>SET START 1 2 TIMEOUT The timeout value tells Kermit how long to wait to get a packet from the other Kermit. If system loads are high, it may be desirable to increase this beyond the default of 10 seconds. 2 TERMINAL The SET TERMINAL command simply controls the way which Kermit-11 prints packet counts while send or receiving a file (or group of files). The simplest way is the default, SET TER TTY. Using SET TER VT100 will cause Kermit to display headers for the numbers printed, at a possible cost in packet speed due to screen control overhead. Kermit-11>SET TER TTY Kermit-11>SET TER VT100 2 UPDATE The SET UPDATE command controls the frequency at which the packet count display is updated. The default is 1, displaying each packet. A SET UPD 0 will disable all packet count logs, whereas a SET UPD N will update the display every N packets. The SET NOUPDATE command is the same as SET UPDATE 0. 1 SHOW The SHOW command will display the settings made by the SET command and allow you to look at session statistics. Kermit-11>SHOW parameter 2 ALL Displays everything: BLOCK-CHECK DEBUG DEFAULT ESCAPE FILE-TYPE LINE PACKET PARAM TIME VERSION 2 BLOCK-CHECK-TYPE Displays the current type of checksum set. 2 DEBUG Shows the status of debugging. 2 DEFAULT Shows the device and UIC (or PPN) used for file operations. 2 ESCAPE Shows the escape character used to return to a local Kermit-11 2 FILE-TYPE Shows the current filetype (BINARY or ASCII) 2 LINE Displays parameters associated with the current CONNECT line. 2 PACKET Prints out packets statistics from the last transaction and total so far. 2 PARAMETERS Prints out various send parameters 2 RECORD-FORMAT Shows what kind of file will be created by Kermit. 2 TIME The time of day 2 VERSION My current version and edit. 1 STARTUP You can place a file called KERMIT.INI in your account and have Kermit-11 automatically read commands from it before getting commands from your terminal. 1 SYSTEM The SYSTEM command takes a CCL/MCR/DCL command line and spawns a task to execute it. This is done via the SPWN$S directive for RSX and by spawning a job on a pseudo-keyboard for RSTS. If the command fails for RSTS then Kermits protection code was set to run without privileges. Kermit-11>SYS PIP DB1:=FUBAR.DAT Kermit-11>SYS Command: SUB MYJOB Kermit-11> 1 TAKE The Take command is just like the @ command. It opens a disk file for reading commands from, as in TAKE filename. Kermit-11>TAKE MYKERM.CMD 1 TSX+ Kermit-11 for TSX+ is exactly the same Kermit used under RT11/XM. Kermit-11 for RT11 always checks for the type of system it is on, be that RT11, PRO/RT11 or TSX+. At run time, it will dispatch to the correct overlay for doing terminal I/O (or XL/XC I/O). Note that for TSX+, you can only dial out by using the XL handler, supplied with version 5. As far as system requirements go the author has been told that the sysgen parameter DINSPC in TSGEN.MAC mu st at least 100 (10) in value, otherwise the terminal driver will be unable to buffer the entire received Kermit packet. Since the author does not have or use TSX+, any problems that arise on TSX+ will have to be fixed by the site's systems personel and reported back to the author. To use the CL: handler under TSX+, the following commands are needed. Please note that 'n' stands for a value, be it a unit number or a speed value. In all cases, the commands are KMON commands unless shown with a Kermit-11> prefix. .SET CL LINE=n .SET CL NOLFOUT .SET CL SPEED=nnnn .ASS CLn XL .run kermit Kermit-11>SET LIN XL See HELP RT11 for more information that would also pertain to TSX+. 1 TYPE The TYPE command prints a file to your terminal, as in: Kermit-11>TYPE KERMIT.INI 1 USAGE Kermit-11 is normally run on the PDP-11 host system as a server. This means that a remote Kermit can send it commands without the user having to be switching between the local Kermit (usually a micro) and the remote Kermit (the one on the PDP-11). While Kermit-11 supports most of the server commands shown in version Four revision 1 of the protocol manual (see HELP REMOTE), not all micro based Kermits are able to send these commands to Kermit-11. Most Kermits do support the GET, SEND, BYE and FINISH server commands, which are sufficient for most file transfers. The following is an example of the dialog when a DEC VT180 Robin connects to a PDP-11/70 RSTS system to use Kermit. A>b: B>a:cpmrob Kermit-80 V3.6 [VT180 "Robin"] Kermit-80 B:>connect [Connected to remote host, type Control-\C to return] LOG RSTS V8.0-07 U of Toledo 70 Job 12 KB25 17-Feb-84 03:31 PM User # 2/2 Password: Welcome to RSTS/E version 8.0 $ kermit Kermit-11>server Kermit Server running on PDP-11 host. Please type your escape sequence to return to your local machine. Shut down the server by typing the Kermit BYE command on your local machine. (the user now types Ctrl \C) Kermit-80 B:>get *.odl . . All files on the 11/70 with types of ODL are sent . Kermit-80 B:>bye B> See HELP SEND, HELP GET and HELP BYE for additional information. 1 WHO The WHO command (currently for RSTS/E only) prints a brief SYSTAT out.