SHA256SUM ("1") | General commands | Unix Manual Pages | :man ▋
NAME
sha256sum - compute and check SHA256 message digest
CONTENTS
Synopsis Description Author Copyright
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)
"The following two options are useful only when verifying checksums:"
--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 bugs to < bug-coreutils@gnu.org >.
COPYRIGHT
Copyright © 2007 Free Software Foundation, Inc. http://www.gnu.org/licenses/gpl.html >. There is NO WARRANTY, to the extent permitted by law.
"SEE ALSO"
