AT&T UNIX™PC Unix System V Users Manual - tenox

UMODEM(l) UMODEM (l)
NAME
umodem - remote file transfer program for CP/M terminals
SYNOPSIS
umodem - [ rb I rt I sb I st ) [ q ) [ 1 ) [ m ) [ d ) [ Y )
[ 7 ] filename
DESCRIPTION
Umodem cooperates with the MODEM.COM, YAM.COM, or similar
program, running on a CP /M-based intelligent terminal, to perform
a file transfer. The integrity of the transfer is enhanced by
use of a block checksum for error detection, and block retransmission
for error correction.
Umodem requires exactly one of the following commands:
rb Receive Binary-transfer a file from the terminal, in raw
binary mode. Every byte of the file will be transferred
intact. This mode is usually used to transfer, for example,
.COM files.
rt Receive Text-transfer a file from the terminal, in text
mode. In this mode the program attempts to convert
from the CP/M text file format to the UNIX format onthe-fly,
by stripping carriage-return characters, and by
ceasing to store data after a control-Z is detected.
sb Send Binary-transfer a file to the terminal, in raw binary
mode. Every byte of the file will be transferred intact.
This mode is usually used to transfer, for example, .COM
files.
st Send Text-transfer a file to the terminal, in text mode.
In this mode the program attempts to convert from the
UNIX text file format to the CP/M format on-the-fly, by
adding carriage-return characters, and by appending a
control-Z to the end of the file.
In addition, umodem recognizes the following options:
q Quiet option-the initial "boiler plate" of program name,
file size, etc., is suppressed.
Logfile option-enables logging the progress of the file
transfer. This option is primarily useful for debugging.
m "Mung-mode" option-unless this option is specified, an
attempt to receive a filename that already exists will be
denied. With this option, the existing file is overwritten.
d Delete the logfile, if it exists, before starting.
y Display file status (size) information only.
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