SHASUM(1) User Commands 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.
read files in binary mode (default on DOS/Windows)
check SHA1 sums against given list
read files in text mode (default)
The following two options are useful only when verifying checksums:
don’t output anything, status code shows success
warn about improperly formated checksum lines
--help display this help and exit
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 <firstname.lastname@example.org>.
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
The full documentation for shasum is maintained as a Texinfo manual.
If the info and shasum programs are properly installed at your site,
info coreutils sha1sum
should give you access to the complete manual.
shasum (coreutils) 5.2.1 July 2005 SHASUM(1)
Man(1) output converted with