Man1 - sha256sum.1

NAME
SYNOPSIS
DESCRIPTION
- The following five options are useful only when verifying checksums:
AUTHOR
REPORTING BUGS
COPYRIGHT
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.

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 © 2021 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.