opensolaris man page for sha256sum

SHA256SUM(1)							   User Commands						      SHA256SUM(1)

NAME
       sha256sum - compute and check SHA256 message digest

SYNOPSIS
       sha256sum [OPTION] [FILE]...

DESCRIPTION
       Print or check SHA256 (256-bit) checksums.  With no FILE, or when FILE is -, read standard input.

       -b, --binary
	      read in binary mode

       -c, --check
	      read SHA256 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-180-2.  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 (C) 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 sha256sum is maintained as a Texinfo manual.  If the info and sha256sum programs are properly installed at your
       site, the command

	      info sha256sum

       should give you access to the complete manual.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +--------------------+--------------------+
       |  ATTRIBUTE TYPE    |  ATTRIBUTE VALUE	 |
       +--------------------+--------------------+
       |Availability	    | SUNWgnu-coreutils  |
       +--------------------+--------------------+
       |Interface Stability | Uncommitted	 |
       +--------------------+--------------------+
NOTES
       Source for GNU coreutils is available on http://opensolaris.org.

sha256sum 6.7							   December 2006						      SHA256SUM(1)