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
17
18       -c, --check
19              read SHA256 sums from the FILEs and check them
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21       -t, --text
22              read in text mode (default)
23
24              Note: There is no difference between binary and text mode option
25              on GNU system.
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27   The following three options are useful only when verifying checksums:
28       --quiet
29              don't print OK for each successfully verified file
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31       --status
32              don't output anything, status code shows success
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34       -w, --warn
35              warn about improperly formatted checksum lines
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37       --help display this help and exit
38
39       --version
40              output version information and exit
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42       The  sums  are computed as described in FIPS-180-2.  When checking, the
43       input should be a former output of this program.  The default  mode  is
44       to  print  a  line  with checksum, a character indicating type (`*' for
45       binary, ` ' for text), and name for each FILE.
46

AUTHOR

48       Written by Ulrich Drepper, Scott Miller, and David Madore.
49

REPORTING BUGS

51       Report sha256sum bugs to bug-coreutils@gnu.org
52       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
53       General help using GNU software: <http://www.gnu.org/gethelp/>
54       Report   sha256sum   translation   bugs   to    <http://translationpro‐
55       ject.org/team/>
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58       Copyright  ©  2010  Free Software Foundation, Inc.  License GPLv3+: GNU
59       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
60       This is free software: you are free  to  change  and  redistribute  it.
61       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

64       The full documentation for sha256sum is maintained as a Texinfo manual.
65       If the info and sha256sum programs are properly installed at your site,
66       the command
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68              info coreutils 'sha256sum invocation'
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70       should give you access to the complete manual.
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74GNU coreutils 8.4                  June 2018                      SHA256SUM(1)
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