CRC(1)
Omen Technology
NAME
crc -
checksum files
INC (OMEN)
CRC(1)
SYNOPSIS
crc file ...
DESCRIPTION
For each file, crc calculates
and prints a 32-bit CRC, the
byte count, and the file name. It is typically used to
validate files transferred between different systems, and is
useful in detecting subtle disk corruption. Crc uses a
checksum compatible with the DOS version of crc, the 32 bit
CRC used by PKZIP version 0.9, as well as the
"crc" command
in ZCOMM and Professional-YAM
(high reliability
communications programs).
The 32-bit CRC used is the frame check sequence in ADCCP
(ANSI
X3.66, also known as FIPS PUB 71 and FED-STD-1003, the
U.S. versions of CCITT's X.25 link-level protocol).
32 bit CRC code courtesy Gary
S. Brown.
BUGS
Although extremely unlikely, files with different data may
still
produce
the same crc value.
SEE ALSO
chek(1), undos(OMEN),
wc(1).
todos(OMEN), tocpm(OMEN), sum(1),
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(printed 9/15/91)