SHASUMSection: User Commands (1)Updated: October 2004 |
NAME
shasum - compute and check SHA1 message digestSYNOPSIS
sha1sum [OPTION] [FILE]...sha1sum [OPTION] --check [FILE]
DESCRIPTION
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.
AUTHOR
Written by Ulrich Drepper and Scott Miller.REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.COPYRIGHT
Copyright © 2004 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 PARTICULAR PURPOSE.
SEE ALSO
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 coreutils sha1sum
should give you access to the complete manual.