1SHA256SUM(1)                     User Commands                    SHA256SUM(1)
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NAME

6       sha256sum - compute and check SHA256 message digest
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SYNOPSIS

9       sha256sum [OPTION]... [FILE]...
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DESCRIPTION

12       Print  or check SHA256 (256-bit) checksums.  With no FILE, or when FILE
13       is -, read standard input.
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15       -b, --binary
16              read in binary mode
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18       -c, --check
19              read SHA256 sums from the FILEs and check them
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21       --tag  create a BSD-style checksum
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23       -t, --text
24              read in text mode (default)
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26              Note: There is no difference between binary and text mode option
27              on GNU system.
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29   The following four options are useful only when verifying checksums:
30       --quiet
31              don't print OK for each successfully verified file
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33       --status
34              don't output anything, status code shows success
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36       --strict
37              exit non-zero for improperly formatted checksum lines
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39       -w, --warn
40              warn about improperly formatted checksum lines
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42       --help display this help and exit
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44       --version
45              output version information and exit
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47       The  sums  are computed as described in FIPS-180-2.  When checking, the
48       input should be a former output of this program.  The default  mode  is
49       to  print  a line with checksum, a character indicating input mode ('*'
50       for binary, space for text), and name for each FILE.
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52       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>
53       Report    sha256sum   translation   bugs   to   <http://translationpro‐
54       ject.org/team/>
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AUTHOR

57       Written by Ulrich Drepper, Scott Miller, and David Madore.
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60       Copyright © 2013 Free Software Foundation, Inc.   License  GPLv3+:  GNU
61       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
62       This  is  free  software:  you  are free to change and redistribute it.
63       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

66       The full documentation for sha256sum is maintained as a Texinfo manual.
67       If the info and sha256sum programs are properly installed at your site,
68       the command
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70              info coreutils 'sha256sum invocation'
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72       should give you access to the complete manual.
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76GNU coreutils 8.22               October 2018                     SHA256SUM(1)
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