SHA1SUM(1) User Commands SHA1SUM(1)NAMEsha1sum - compute and check SHA1 message digest
SYNOPSISsha1sum [OPTION]... [FILE]...
DESCRIPTION
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
--tag create a BSD-style checksum
-t, --text
read in text mode (default)
The following three options are useful only when verifying checksums:
--quiet
don't print OK for each successfully verified file
--status
don't output anything, status code shows success
-w, --warn
warn about improperly formatted checksum lines
--strict
with --check, exit non-zero for any invalid input
--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 input mode ('*'
for binary, space for text), and name for each FILE.
AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore.
REPORTING BUGS
Report sha1sum bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report sha1sum translation bugs to <http://translationpro‐
ject.org/team/>
Packaged by Gentoo (8.21 (p1.0))
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
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 coreutils 'sha1sum invocation'
should give you access to the complete manual.
GNU coreutils 8.21 February 2013 SHA1SUM(1)
