BSD 2.11 - man page for crc (bsd section 1)
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crc - checksum files
crc file ...
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 use-
ful in detecting subtle disk corruption. Crc uses a checksum compatible with the DOS ver-
sion 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.
Although extremely unlikely, files with different data may still produce the same crc
chek(1), undos(OMEN), todos(OMEN), tocpm(OMEN), sum(1), wc(1).
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