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NAME | SYNOPSIS | DESCRIPTION | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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SHA224SUM(1) User Commands SHA224SUM(1)
sha224sum - compute and check SHA224 message digest
sha224sum [OPTION]... [FILE]...
Print or check SHA224 (224-bit) checksums. Legacy interface to
the cksum utility.
With no FILE, or when FILE is -, read standard input.
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-b\-b, --binary]8;;\
read in binary mode
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-c\-c, --check]8;;\
read checksums from the FILEs and check them
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--tag\--tag]8;;\ create a BSD-style checksum
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-t\-t, --text]8;;\
read in text mode (default)
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-z\-z, --zero]8;;\
end each output line with NUL, not newline, and disable
file name escaping
The following five options are useful only when verifying checksums:
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--ignore-missing\--ignore-missing]8;;\
don't fail or report status for missing files
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--quiet\--quiet]8;;\
don't print OK for each successfully verified file
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--status\--status]8;;\
don't output anything, status code shows success
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--strict\--strict]8;;\
exit non-zero for improperly formatted checksum lines
]8;;https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-w\-w, --warn]8;;\
warn about improperly formatted checksum lines
]8;;https://www.gnu.org/software/coreutils/cksum#cksum--help\--help]8;;\ display this help and exit
]8;;https://www.gnu.org/software/coreutils/cksum#cksum--version\--version]8;;\
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.
Written by Ulrich Drepper, Scott Miller, and David Madore.
Report bugs to: bug-coreutils@gnu.org
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>
Report any translation bugs to
<https://translationproject.org/team/>
Copyright © 2026 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.
cksum(1)
Full documentation
<https://www.gnu.org/software/coreutils/sha224sum>
or available locally via: info '(coreutils) sha2 utilities'
This page is part of the coreutils (basic file, shell and text
manipulation utilities) project. Information about the project
can be found at ⟨http://www.gnu.org/software/coreutils/⟩. If you
have a bug report for this manual page, see
⟨http://www.gnu.org/software/coreutils/⟩. This page was obtained
from the tarball coreutils-9.11.tar.xz fetched from
⟨http://ftp.gnu.org/gnu/coreutils/⟩ on 2026-05-24. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to man-pages@man7.org
GNU coreutils 9.11 April 2026 SHA224SUM(1)
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HTML rendering created 2026-05-24 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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