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Updated: Wednesday, February 10, 2021
 
 

md5sum (1)

Name

md5sum - compute and check MD5 message digest

Synopsis

md5sum [OPTION]... [FILE]...

Description

MD5SUM(1)                        User Commands                       MD5SUM(1)



NAME
       md5sum - compute and check MD5 message digest

SYNOPSIS
       md5sum [OPTION]... [FILE]...

DESCRIPTION
       Print or check MD5 (128-bit) checksums.

       With no FILE, or when FILE is -, read standard input.

       -b, --binary
              read in binary mode

       -c, --check
              read MD5 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 RFC 1321.  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.

BUGS
       Do  not  use the MD5 algorithm for security related purposes.  Instead,
       use an SHA-2  algorithm,  implemented  in  the  programs  sha224sum(1),
       sha256sum(1),  sha384sum(1),  sha512sum(1),  or  the  BLAKE2 algorithm,
       implemented in b2sum(1)

AUTHOR
       Written by Ulrich Drepper, Scott Miller, and David Madore.

REPORTING BUGS
       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report md5sum 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.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+--------------------+
       |ATTRIBUTE TYPE |  ATTRIBUTE VALUE   |
       +---------------+--------------------+
       |Availability   | file/gnu-coreutils |
       +---------------+--------------------+
       |Stability      | Uncommitted        |
       +---------------+--------------------+
SEE ALSO
       Full documentation at: <http://www.gnu.org/software/coreutils/md5sum>
       or available locally via: info '(coreutils) md5sum invocation'



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source  was  downloaded  from   https://ftp.gnu.org/gnu/coreutils/core-
       utils-8.27.tar.xz

       Further information about this software can be found on the open source
       community website at https://www.gnu.org/software/coreutils.



GNU coreutils 8.27                March 2017                         MD5SUM(1)