*BASH User Commands Ubuntu 10.04.4 LTS Server coreutils
GNU/Linux
SHA1SUM(1)                       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

       --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/>

COPYRIGHT
       Copyright  (C) 2009 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 7.4                January 2015                       SHA1SUM(1)