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SHA1SUM(1) User Commands

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 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.

AUTHOR

   Written by Ulrich Drepper, Scott Miller, and David Madore.

REPORTING BUGS

   Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

   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.

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 sha1sum

   should give you access to the complete manual.

sha1sum 5.97 January 2007