NAME¶
sha224sum - compute and check SHA224 message digest
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.
