SHASUM(1)			User Commands			    SHASUM(1)



NAME
       shasum - compute and check SHA1 message digest

SYNOPSIS
       sha1sum [OPTION] [FILE]...
       sha1sum [OPTION] --check [FILE]

DESCRIPTION
       Print  or  check SHA1 (160-bit) checksums.  With no FILE, or when FILE
       is -, read standard input.

       -b, --binary
	      read files in binary mode (default on DOS/Windows)

       -c, --check
	      check SHA1 sums against given list

       -t, --text
	      read files 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 formated 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 and Scott Miller.

REPORTING BUGS
       Report bugs to .

COPYRIGHT
       Copyright (C) 2004 Free Software Foundation, Inc.
       This  is	 free software; see the source for copying conditions.	There
       is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO
       The  full  documentation for shasum is maintained as a Texinfo manual.
       If the info and shasum programs are properly installed at  your	site,
       the command

	      info coreutils sha1sum

       should give you access to the complete manual.



shasum (coreutils) 5.2.1	 August 2006			    SHASUM(1)

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