sha224sum(1)

GNU coreutils 8.32

March 2020

coreutils

The basic file, shell and text manipulation utilities of the GNU operating system

coreutils-doc

Documentation for the GNU Core Utilities

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)
-z, --zero	end each output line with NUL, not newline, and disable file name escaping

The following five options are useful only when verifying checksums:

--ignore-missing
	don’t fail or report status for missing files
--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 space, a character indicating input mode (’*’ for binary, ’ ’ for text or where binary is insignificant), and name for each FILE.

Note: There is no difference between binary mode and text mode on GNU systems.

AUTHOR

Written by Ulrich Drepper, Scott Miller, and David Madore.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT

Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://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.