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- CCCCRRRRCCCC((((1111)))) OOOOmmmmeeeennnn TTTTeeeecccchhhhnnnnoooollllooooggggyyyy IIIINNNNCCCC ((((OOOOMMMMEEEENNNN)))) CCCCRRRRCCCC((((1111))))
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- NNNNAAAAMMMMEEEE
- crc - checksum files
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- ccccrrrrcccc file ...
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- For each file, _c_r_c 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. _C_r_c 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).
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- 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).
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- 32 bit CRC code courtesy Gary S. Brown.
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- BBBBUUUUGGGGSSSS
- Although extremely unlikely, files with different data may
- still produce the same crc value.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- chek(1), undos(OMEN), todos(OMEN), tocpm(OMEN), sum(1),
- wc(1).
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- Page 1 (printed 9/15/91)
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