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. Legacy interface to the cksum
utility.
With no FILE, or when FILE is -, read standard input.
-b, --binary
read in binary mode
-c, --check
read checksums 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.
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
Report bugs to: bug-coreutils@gnu.org
GNU coreutils home page:
General help using GNU software:
Report any translation bugs to
COPYRIGHT
Copyright (C) 2026 Free Software Foundation, Inc. License GPLv3+: GNU GPL
version 3 or later .
This is free software: you are free to change and redistribute it. There
is NO WARRANTY, to the extent permitted by law.
SEE ALSO
cksum(1)
Full documentation
or available locally via: info '(coreutils) sha2 utilities'
GNU coreutils 9.11 April 2026 SHA224SUM(1)