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RedHat 9 (Linux i386) - man page for sha1sum (redhat section 1)

SHASUM(1)								FSF								 SHASUM(1)

shasum - compute and check SHA1 message digest
sha1sum [OPTION] [FILE]... sha1sum [OPTION] --check [FILE]
Print or check SHA1 (160-bit) checksums. With no FILE, or when FILE is -, read standard input. -b, --binary read files in binary mode (default on DOS/Windows) -c, --check check SHA1 sums against given list -t, --text read files in text mode (default) The following two options are useful only when verifying checksums: --status don't output anything, status code shows success -w, --warn warn about improperly formated checksum lines --help display this help and exit --version output version information and exit The sums are computed as described in FIPS-180-1. When checking, the input should be a former output of this program. The default mode is to print a line with checksum, a character indicating type (`*' for binary, ` ' for text), and name for each FILE.
Written by Ulrich Drepper and Scott Miller.
Report bugs to <>.
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE.
The full documentation for shasum is maintained as a Texinfo manual. If the info and shasum programs are properly installed at your site, the command info shasum should give you access to the complete manual. shasum (coreutils) 4.5.3 February 2003 SHASUM(1)