1MD5SUM(1)                        User Commands                       MD5SUM(1)
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NAME

6       md5sum - compute and check MD5 message digest
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SYNOPSIS

9       md5sum [OPTION]... [FILE]...
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DESCRIPTION

12       Print  or check MD5 (128-bit) checksums.  With no FILE, or when FILE is
13       -, read standard input.
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15       -b, --binary
16              read in binary mode
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18       -c, --check
19              read MD5 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 RFC 1321.  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 md5sum translation bugs to <http://translationproject.org/team/>
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BUGS

56       The MD5 algorithm should not be used any more for security related pur‐
57       poses.  Instead, better use an SHA-2 algorithm, implemented in the pro‐
58       grams sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1)
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AUTHOR

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

70       The  full  documentation  for md5sum is maintained as a Texinfo manual.
71       If the info and md5sum programs are properly installed  at  your  site,
72       the command
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74              info coreutils 'md5sum invocation'
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76       should give you access to the complete manual.
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80GNU coreutils 8.22               October 2018                        MD5SUM(1)
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