sha1sum
(1)
Name
sha1sum - compute and check SHA1 message digest
Synopsis
sha1sum [OPTION]... [FILE]...
Description
User Commands SHA1SUM(1)
NAME
sha1sum - compute and check SHA1 message digest
SYNOPSIS
sha1sum [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
-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 pro-
gram. 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/core-
utils/>
GNU coreutils 8.16 Last change: March 2012 1
User Commands SHA1SUM(1)
General help using GNU software: <http://www.gnu.org/geth-
elp/>
Report sha1sum translation bugs to <http://translationpro-
ject.org/team/>
COPYRIGHT
Copyright (C) 2012 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 redis-
tribute it. There is NO WARRANTY, to the extent permitted
by law.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+--------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------+
|Availability | file/gnu-coreutils |
+---------------+--------------------+
|Stability | Uncommitted |
+---------------+--------------------+
SEE ALSO
The full documentation for sha1sum is maintained as a Tex-
info 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.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://ftp.gnu.org/gnu/coreutils/coreutils-8.16.tar.xz
Further information about this software can be found on the
open source community website at http://www.gnu.org/soft-
ware/coreutils/.
GNU coreutils 8.16 Last change: March 2012 2