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the file: MD5SUM

 
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Old 07-05-2002
Question the file: MD5SUM
i downloaded a Linux distribution from a FTP site today, and i found there is a file named MD5SUM in the same directory, with the following contents:


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

c9a4d963a49e384e10dec9c2bd49ad73 valhalla-SRPMS-disc1.iso
41b03d068e84d2a17147aa27e704f79b valhalla-SRPMS-disc2.iso
cb91810ce8173039fed24420407e4c59 valhalla-i386-disc1.iso
ec1b813d32ffdc8edc2be261735d17de valhalla-i386-disc2.iso
5dc81ce523cfddf99b4d4d63e91bcaa7 valhalla-i386-disc3.iso
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE8z/oCIZGAzdtCpg4RAsMvAJ9+xOn4Pw1T0mp8zVT64cEDWuqqKwCfblTd
4Lw0SvJC+v/6JbGIxJWL7aA=
=0xs+
-----END PGP SIGNATURE-----

what's the usage of the file, and how i can use it?

Thanks!
 
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LEARN ABOUT REDHAT

md5sum

MD5SUM(1)								FSF								 MD5SUM(1)

NAME

       md5sum - compute and check MD5 message digest

SYNOPSIS

       md5sum [OPTION] [FILE]...
       md5sum [OPTION] --check [FILE]

DESCRIPTION

       Print or check MD5 (128-bit) checksums.	With no FILE, or when FILE is -, read standard input.

       -b, --binary
	      read files in binary mode (default on DOS/Windows)

       -c, --check
	      check MD5 sums against given list

       -t, --text
	      read files in text mode (default)

   The following two options are useful only when verifying checksums:
       --status
	      don't output anything, status code shows success

       -w, --warn
	      warn about improperly formated 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 character indicating type (`*' for binary, ` ' for text), and name for each FILE.

AUTHOR

       Written by Ulrich Drepper and Scott Miller.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The  full documentation for md5sum is maintained as a Texinfo manual.  If the info and md5sum programs are properly installed at your site,
       the command

	      info md5sum

       should give you access to the complete manual.

md5sum (coreutils) 4.5.3					   February 2003							 MD5SUM(1)