Manual Reference Pages  - SHA224SUM (1)

NAME

sha224sum - compute and check SHA224 message digest

CONTENTS

Synopsis
Description
Author
Copyright

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 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
--strict
  with --check, exit non-zero for any invalid input
--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 sha224sum 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/>
Report sha224sum translation bugs to <http://translationproject.org/team/>

COPYRIGHT

Copyright © 2011 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 sha224sum is maintained as a Texinfo manual. If the info and sha224sum programs are properly installed at your site, the command
info coreutils sha224sum invocation
should give you access to the complete manual.


GNU coreutils 8.12.197-032bb SHA224SUM (1) September 2011
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