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- CCCCRRRRCCCC((((1111)))) XXXXEEEENNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((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, 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 most unlikely, files with different data may still
- produce the same crc value.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- chek(1), tocpm(1), sum(1), wc(1).
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- Page 1 (printed 1/17/87)
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