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KERMIT Kermit-MUSIC is a program that implements the KERMIT file transfer protocol for IBM 370-series mainframes running the MUSIC/SP operating system. It allows for the transfer of files between computers over asynchronous ASCII communications lines (attached to a 3705-style front end, such as the COMTEN, or to a Series/1 or 4994 running the Yale ASCII Terminal Communication System, or to an IBM 7171 ASCII Device Control Unit). For more details, see SET CONTROLLER. The calling format for Kermit-MUSIC is: +----------+-----------------------+ | | | | KERMIT | [kercmd ... kercmd] | | | | +----------+-----------------------+ where kercmd is a valid Kermit-MUSIC command. If no Kermit commands are supplied, Kermit-MUSIC will issue a prompt and wait for instructions. When Kermit is invoked with command line arguments, it will exit and return to MUSIC after completing the specified command or commands. Several commands may be given on the command line as long as they are separated by the linend character. The command line may contain up to 130 characters. Commands: SEND fn[<n-m>] [filespec] Send a file or file group from MUSIC to the Kermit on the remote system. The wildcard characters "*" or "?" may be used. A "*" matches any string of characters from the current position to the end of the field, including no characters at all; a "?" matches any single character. If the input contains wildcard characters then all matching files will be sent. The exact file name on the foreign Kermit system may be specified; otherwise, Kermit-MUSIC will make it up out of the MUSIC name. A range of lines, "n" through "m", may be specified for sending. RECEIVE [fn] Receive a file or file group from the other system. If the optional filename is not included, Kermit-MUSIC will use the name provided by the other Kermit. If that name is not a legal MUSIC file name, Kermit-MUSIC will delete excessive characters from it, and will change illegal characters to dollar signs. Use the file specification to indicate that the incoming file should be stored under a different name. The filespec may include a code to designate the destination code. If none is provided, the file will be saved in the current working directory which is by default your code. Wildcards may not be used in any field. If the optional filespec is provided, but more than one file arrives, the first file will be stored under the given filespec, and the remainder will be stored under their own names in the current working directory. TAKE fn Execute Kermit commands from the specified file. The command file may include TAKE commands. SERVER Kermit-MUSIC is capable of acting as a server. In server mode, Kermit-MUSIC can send and receive files, execute certain MUSIC commands, execute a restricted set of Kermit commands, and perform a variety of generic Kermit functions. The following list shows the typical local Kermit commands along with the server functions they elicit. Note that when Kermit-MUSIC is talking to a Kermit server, these same commands may be used in the other direction. BYE log out of MUSIC FINISH exit from server mode GET send a file or files from MUSIC REMOTE COPY copy a file or files REMOTE CWD set new "home" disk REMOTE DIRECTORY display file attributes REMOTE ERASE delete a file or files REMOTE HELP display this command summary REMOTE HOST execute a MUSIC command REMOTE KERMIT execute a Kermit-MUSIC command REMOTE RENAME rename a file or files REMOTE SPACE display disk allocations REMOTE TYPE display a file SEND receive a file or files onto MUSIC If your local Kermit does not support the REMOTE KERMIT command, you may need to issue SET commands to select various options before typing the SERVER command. Once in server mode, Kermit-MUSIC will await all further instructions from the user Kermit on the other end of the connection. CWD code Change Working Directory - establish new default "code" for all files. SET parameter [value] Establish or modify various parameters for file transfer. You can examine their values with the SHOW command. Valid options are: ATOE [num1 num2] Modify the ASCII-to-EBCDIC translate table used by Kermit-MUSIC to conform to your system. Specify the offset of the ASCII value within the table and the new value for that location. Both "num1" and "num2" should be in the range 0-255 (decimal). If "num1" and "num2" are omitted, restore the table to its default values. Tables ETOA, TATOE, and TETOA may be modified in the same way. ATTRIBUTE [attribute] <ON | OFF> Allows or suppresses the exchange of Attribute packets. BLOCK num Determine the type of block check used during file transfer. Valid options for "num" are: 1 (for a one character checksum), 2 (for a two character checksum) and 3 (for a three character CRC). CONTROLLER <TTY | SERIES1 | GRAPHICS> Kermit-MUSIC automatically determines whether you are connected via a Series/1-style emulation controller or a TTY line. This command is provided, though, so you can change connections and because Kermit may not be able to distinguish between Series/1 and graphics throughput devices. For both of those, Kermit attempts to disable the 3270 protocol conversion function by putting the controller into "transparent mode"; this allows Kermit packets to pass through intact. DEBUG <ON | OFF | RAW | I/O> If ON, keep a journal of all packets sent and received in the file KERMIT.LOG. If the file already exists, it is overwritten. If OFF, stop logging the packets. If RAW, same as ON, but record packets "exactly" as sent or received (without translating to EBCDIC). If I/O, same as ON, but record supplemental info for SERIES1 transfers. DELAY num How long to wait before sending the first packet. Use a DELAY of 0 to suppress the extra 1-second pause for issuing the protocol-mode greetings. DELIM char Specifies a character to be interpreted by Kermit as a line delimiter in subsequent subcommands. DESTINATION code Specify a new user code. EOF <ON | OFF> ON means incoming text files are to be cut off at first Ctrl-Z character within the data, OFF means accept incoming text files in their entirety. FILE COLLISION <APPEND | BACKUP | DISCARD | OVERWRITE | RENAME> Specifies the action to take when a file is received that has the same name as an existing one. BACKUP and RENAME are similar, but BACKUP renames the old file while RENAME renames the new one. OVERWRITE is the default. FILE LONGLINE <FOLD | TRUNC | HALT> Specifies the action to take upon receiving records longer than the effective limit (for TEXT files). With fixed record format, the limit is the logical record length, but with variable record format, the limit is 32K-1. FILE LRECL num Set the logical record length for incoming files to a "num" from 1 to 32767 (32K-1). This variable is used only for fixed format and binary files. The default is 80. FILE OVERWRITE <DEFAULT | PRESERVE> Specifies what attributes to use when writing a new file over an old one. DEFAULT is the default. FILE RECFM <FIXED | VARIABLE> Set the record format to use for incoming files, using "F" for fixed format and "V" for variable format. The default is variable. FILE TYPE <BINARY | TEXT | V-BINARY | D-BINARY> If BINARY, MUSIC Kermit treats each character as a string of bits and does not perform translation on the data. Also, carriage returns are not added to the end of outgoing records. Incoming bytes are added to the end of the current record which is written out when the specified LRECL is reached. If TEXT, MUSIC Kermit treats the file as plain text; ASCII-to-EBCDIC and EBCDIC-to-ASCII translation is performed on the data. A carriage return-linefeed is appended to each outgoing record and is used to determine the end of each incoming record. V-BINARY specifies variable-length-record binary data; like BINARY, except that a 2-byte length field precedes each outbound record, and is assumed for incoming records. D-BINARY is similar, but the length field is a 5-byte ASCII decimal string. FOREIGN <PREFIX | SUFFIX> string The specified string is added to the beginning or end of outbound filespecs. INCOMPLETE <DISCARD | KEEP> The specified action is taken when a transfer is cancelled by the other Kermit before MUSIC has completely received the file. MARGIN <LEFT | RIGHT> column The specified margin is set for restricting the width of files to be sent. A value of zero disables the specified margin. PROMPT string This command defines the character string that Kermit-MUSIC displays when asking for a command. The prompt may be any string of up to 20 characters. The default is "Kermit-MUSIC>". <SEND | RECEIVE> END-OF-LINE num If the remote system needs packets to be terminated by anything other than carriage return, specify the decimal value of the desired ASCII character. "num" must be in the range 0 - 31 (decimal). RECEIVE PACKET-SIZE num Use the specified "num" as the maximum length for incoming packets. The valid range is 26-1910, where 80 is the default. SET RECEIVE PACKET-SIZE 95 or greater causes Kermit-MUSIC to negotiate reception of extended length packets with other Kermit programs that support this option. <SEND | RECEIVE> PAD-CHAR num Padding character to use between packets, NUL (ASCII 0) by default. <SEND | RECEIVE> PADDING num Number of copies of the interpacket padding character, zero by default. <SEND | RECEIVE> PARITY <MARK | NONE> Transparent-mode ASCII data from a SERIES1 or GRAPHICS device will typically have either all Mark parity (seven data bits with the eighth bit set) or no parity (eight data bits). Kermit-MUSIC must know which kind of parity to expect in order to calculate checksums properly. The SEND parity controls SERIES1 and GRAPHICS mode transfers. <SEND | RECEIVE> QUOTE char Control character quoting prefix, normally #. <SEND | RECEIVE> START-OF-PACKET num Control character to mark start of packet, normally Ctrl-A (ASCII 1). <SEND | RECEIVE> TIMEOUT num Number of seconds to wait for a packet before retransmitting. RETRY <INITIAL | PACKET> num Establish the threshold for retrying a particular packet. The default is 16 for initial and 5 for ordinary packets. SERVER-TIMEOUT num Number of seconds to wait for a packet in the server loop before sending a NAK. Default is 120. SPEED num Specifies the lines speed to be assumed by Kermit-MUSIC in calculating the optimum packet size on a noisy line. If the value is zero, such calculations are suppressed. The default is 1200. SYSCMD <ON | OFF> Determine whether non-Kermit commands are assumed to be MUSIC commands. TABS-EXPAND <ON | OFF> Controls whether tabs in incoming text files are expended to blanks. TAKE ECHO <ON | OFF> Controls whether the contents of TAKE command files are echoed during execution. TAKE ERROR-ACTION <CONTINUE | HALT> Controls whether an error occuring during execution of a TAKE command file is fatal to the execution of that file. TEST <ON | OFF> Used for testing new versions, suppresses block check verification, allows start-of-packet to be set to anything at all. TTABLE <ON | OFF> Controls whether ATOE/ETOA or TATOE/TETOA are used for counteracting the system translations on TTY lines. 8-BIT-QUOTE <ON | OFF | char> Control whether eighth-bit prefixing is done and specify the character to be used. SHOW option Display the values of any or all parameters that can be changed with the SET command, except for ATOE and ETOA (see the TDUMP command). SPACE [letter] Show the storage allocation on the specified MUSIC code. STATUS Return the status of the previous command. The response will either display the message "No errors", or the last error encountered. The throuput statistics for the last transfer are also shown. TDUMP <table-name | NAMES> Display the contents of "table-name" since it can be modified using the SET command. The ATOE, ETOA, TATOE, and TETOA tables can be 'dumped' (also, the list of files sent in the last transfer). GIVE table-name fn Save the contents of "table-name" as a TAKE file containing SET commands to change the default into the current arrangement. ECHO line Display the line at your terminal. XECHO line Display the line at your Series/1 terminal in transparent mode. TYPE fn Display the specified file at your terminal. XTYPE fn Display the specified file at your Series/1 terminal in transparent mode. HOST Issue a MUSIC command from within Kermit-MUSIC. DIR Similar to MUSIC LIBRARY SPACE Same as SHOW. HELP Display a message that explains Kermit-MUSIC commands. EXIT Exit from KERMIT back to the host operating system. QUIT Synonym for EXIT. ? List all legal Kermit-MUSIC commands. You may use the help ("?") feature while typing Kermit-MUSIC commands. A question mark typed at almost any point in a command, followed by a carriage return, produces a brief description of what is expected or possible at that point. Usage Notes: 1. To use MUSIC Kermit though a 3705-style linemode connection, you should be sure to set the following parameters: ECHO LOCAL (half duplex), PARITY MARK (or whatever your system uses), FLOW-CONTROL NONE (rather than XON/XOFF), HANDSHAKE NONE, TIMER ON. 2. To use MUSIC Kermit through a Series/1-style protocol converter, use ECHO REMOTE (full duplex), FLOW-CONTROL XON/XOFF, HANDSHAKE NONE, TIMER ON, and PARITY to EVEN or whatever your front end requires. 3. The current version of Kermit-MUSIC does not support timeouts. Your local Kermit program should supply them (SET TIMER ON enables timeouts in most microcomputer Kermits). 4. When sending packets to Kermit-MUSIC, the micro must use a carriage return as the end-of-line character. Both TTY and Series/1 connections require a carriage return to terminate a read from the terminal; thus, if any other character is used, Kermit-MUSIC will never get the packets.