SHA224SUM(1) User Commands SHA224SUM(1)
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
--tag create a BSD-style checksum
-t, --text
read in text mode (default)
Note: There is no difference between binary and text mode option on GNU system.
The following four 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
--strict
exit non-zero for improperly formatted checksum lines
-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 input mode ('*' for
binary, space for text), and name for each FILE.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report sha224sum translation bugs to
<http://translationproject.org/team/>
AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore.
COPYRIGHT
Copyright © 2013 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 per‐
mitted by law.
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