Linux cli command sha256sum

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command sha256sum and provides detailed information about the command sha256sum, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the sha256sum.

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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 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 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.

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 © 2023 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

cksum(1)

Full documentation <https://www.gnu.org/software/coreutils/sha256sum>
or available locally via: info ‘(coreutils) sha2 utilities’

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