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GNU coreutils 8.32
March 2020

coreutils

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

coreutils-common

coreutils common optional components

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.

SEE ALSO

Full documentation <https://www.gnu.org/software/coreutils/sha224sum>
or available locally via: info \(aq(coreutils) sha2 utilities\(aq
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