Manual Reference Pages  - SHA1SUM (1)

NAME

sha1sum - compute and check SHA1 message digest

CONTENTS

Synopsis
Description
Author
Copyright

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 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, 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://translationproject.org/team/>

COPYRIGHT

Copyright © 2011 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 8.12.197-032bb SHA1SUM (1) September 2011
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