sha256sum(1) [linux man page]
SHA256SUM(1) User Commands SHA256SUM(1) 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) 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
Copyright (C) 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 'sha256sum invocation' should give you access to the complete manual. GNU coreutils 8.5 February 2011 SHA256SUM(1)
Check Out this Related Man Page
SHA256SUM(1) User Commands SHA256SUM(1) 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 --tag create a BSD-style checksum -t, --text read in text mode (default) 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. AUTHOR Written by Ulrich Drepper, Scott Miller, and David Madore. REPORTING BUGS GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report sha256sum translation bugs to <http://translationproject.org/team/> COPYRIGHT Copyright (C) 2017 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 Full documentation at: <http://www.gnu.org/software/coreutils/sha256sum> or available locally via: info '(coreutils) sha2 utilities' GNU coreutils 8.28 January 2018 SHA256SUM(1)