Provided by: coreutils_7.4-2ubuntu1_i386 bug


       sha1sum - compute and check SHA1 message digest


       sha1sum [OPTION]... [FILE]...


       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:
              don’t print OK for each successfully verified file

              don’t output anything, status code shows success

       -w, --warn
              warn about improperly formatted checksum lines

       --help display this help and exit

              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.


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


       Report sha1sum bugs to
       GNU coreutils home page: <>
       General help using GNU software: <>


       Copyright  ©  2009  Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.


       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.