brian@sdccsu3.UUCP (03/01/84)
x .TH XMODEM LOCAL 2/7/84 .UC 4.2 .SH NAME xmodem \- Christensen protocol file transfer utility .SH SYNOPSIS .B xmodem [ .B st|sb|rt|rb ][ .B cdflx ] file .br .SH DESCRIPTION The .I xmodem program implements the Christensen (CP/M users group) file transfer protocol for moving files between 4.2BSD Unix systems and microcomputers. .PP .SH PARAMETERS exactly one of the following must be selected: .TP .B rb Receive Binary - file is placed on Unix disk without conversion as sent. .TP .B rt Receive Text - file is converted from CP/M format of CR-LF pairs to Unix convention of .I newline characters only between lines. The resulting file is acceptable to the Unix editors and compilers, and is usually slightly smaller than the original CP/M file. .TP .B sb Send Binary - the file is sent without conversion as it exists on the Unix disk. .TP .B st Send Text - newline characters in the file are converted to CR-LF pairs in accord with the CP/M conventions for text files. The file grows slightly as this occurs so the estimate of file transmission size and time are always optimistically low. .PP .SH Options: .TP .B c Select CRC mode on receive. CRC mode is better at catching transmission errors that occur. Automatically selected on transmission if the receiving modem program requests it. .TP .B d Toggle (off/on) log file deletion. If deletion is selected, the log file will be deleted before file transfer is begun. .TP .B l Toggle (off/on) the log file. If logging is selected, a file .I xmodem.log will be created (or appended to), with entries for errors and retries described. This can be useful to see why things went wrong when they do. .TP .B f Filter 8-bit chars on receive. Zeros the 8th bit (bit 0-6 are unchanged) to prevent "soft" characters generated by WordStar and other text editors from making a text file uneditable. This option should be selected when receiving WordStar text files onto Unix for further processing. .TP .B x Toggle (off/on) debug mode. If debugging is selected, massive amounts of information (some of it useful) will be written to the log file. .SH FILES xmodem.log (if logging or debugging is enabled) .SH BUGS The CRC option doesn't work yet. .br The .B -f option should probably default on for text receive mode. .SH NOTES Squeezed CP/M files must be transferred in binary mode, even if they contain text. .SH SEE ALSO kermit(L) .SH AUTHOR Brian Kantor, University of California at San Diego. Based on .I umodem by Lauren Weinstein, Richard Conn and others. -- -Brian Kantor, UC San Diego Kantor@Nosc ihnp4 \ decvax \ dcdwest ----- sdcsvax ----- brian ittvax / ucbvax/