Man page - sha256sum(1)

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Manual

SHA256SUM

NAME
SYNOPSIS
DESCRIPTION
The following five options are useful only when verifying checksums:
AUTHOR
REPORTING BUGS
SEE ALSO

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.

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/>