md5sum(1)

     NAME
          md5sum - compute and check MD5 message digest

     SYNOPSIS
          md5sum [-bhtvV] [-c file] [-s[string]] [--binary]
          [--check=file] [--help] [--string[=string]] [--text]
          [--verbose] [--version] [file...]

     DESCRIPTION
          This documentation is no longer being maintained and may be
          inaccurate or incomplete.  The Texinfo documentation is now
          the authoritative source.

          This manual page documents the GNU version of md5sum.
          md5sum produces for each input file a 128-bit "fingerprint"
          or "message-digest" or it can check with the output of a
          former run whether the message digests are still the same
          (i.e. whether the files changed).

        OPTIONS
          -b, --binary
               Treat all input files as binary.  This normally does
               not make any difference on UN*X systems but some
               systems have a different internal and external
               representation of texts (especially the end-of-line
               characters).

          -c, --check=file
               file should be the output of a former run of md5sum.
               The file has in each line the MD5 sum, a binary/text
               flag, and a file name.  This file will be opened (with
               each possible relative path) and the message digest is
               computed.  If it is not the same as given in this line
               it will be marked as failed.

          -h --help
               Print a usage message and exit.

          -s, --string=string
               Instead of computing the message digest for a file
               compute it for the given string.  The result is the
               same as for a file with contains exactly this string.

          -t, --text
               Treat all input files as text files.  This is the
               reverse option to --binary.

          -v, --verbose
               Verbosely write information about the process.

          -V, --version
               Print version information on standard output then exit.