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sha256sum

Langue: en

Version: October 2010 (fedora - 01/12/10)

Section: 1 (Commandes utilisateur)

NAME

sha256sum - compute and check SHA256 message digest

SYNOPSIS

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
-t, --text
read in text mode (default)
Note: There is no difference between binary and text mode option on GNU system.

The following three options are useful only when verifying checksums:

--quiet
don't print OK for each successfully verified file
--status
don't output anything, status code shows success
-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 character indicating type (`*' for binary, ` ' for text), and name for each FILE.

AUTHOR

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

REPORTING BUGS

Report sha256sum bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report sha256sum translation bugs to <http://translationproject.org/team/> Copyright © 2010 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

The full documentation for sha256sum is maintained as a Texinfo manual. If the info and sha256sum programs are properly installed at your site, the command
info coreutils aqsha256sum invocationaq

should give you access to the complete manual.

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