sha1sum: man pageFollow @ggarron
SHA1SUM(1) User Commands
sha1sum - compute and check SHA1 message digest
sha1sum [OPTION] [FILE]...
Print or check SHA1 (160-bit) checksums. With no FILE, or when FILE is -, read standard input. -b, --binary read in binary mode -c, --check read SHA1 sums from the FILEs and check them -t, --text read 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 formatted 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, Scott Miller, and David Madore.
Report bugs to <email@example.com>.
Copyright © 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.
The full documentation for sha1sum is maintained as a Texinfo manual. If the info and sha1sum programs are properly installed at your site, the command info sha1sum should give you access to the complete manual.
sha1sum 5.97 January 2007