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SHA256SUM
Section: User Commands (1)Updated: January 2018
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NAME
sha256sum - compute and check SHA256 message digestSYNOPSIS
sha256sum [,OPTION/]... [,FILE/]...DESCRIPTION
Print or check SHA256 (256-bit) checksums.
With no FILE, or when FILE is -, read standard input.
- -b, --binary
- read in binary mode
- -c, --check
- read SHA256 sums from the FILEs and check them
- --tag
- create a BSD-style checksum
- -t, --text
- read in text mode (default)
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 FIPS-180-2. 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.
AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore.REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>Report sha256sum translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright © 2017 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 permitted by law.
SEE ALSO
Full documentation at: <http://www.gnu.org/software/coreutils/sha256sum>or available locally via: info '(coreutils) sha2 utilities'
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Time: 04:45:21 GMT, September 16, 2022
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