SYNOPSIS

       sha224sum [OPTION] [FILE]...

DESCRIPTION

       Print  or check SHA224 (224-bit) checksums.  With no FILE, or when FILE
       is -, read standard input.

       -b, --binary
              read in binary mode

       -c, --check
              read SHA224 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 RFC  3874.   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) 2007 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 sha224sum is maintained as a Texinfo manual.
       If the info and sha224sum programs are properly installed at your site,
       the command

              info sha224sum