bsd man page for crc

CRC(1)							      General Commands Manual							    CRC(1)

NAME
       crc - checksum files

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 trans-
       ferred 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 communica-
       tions 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), todos(OMEN), tocpm(OMEN), sum(1), wc(1).

								       OMEN								    CRC(1)