md5sum [OPTION]... [FILE]...
Print or check MD5 (128-bit) checksums. With no FILE, or when FILE is
-, read standard input.
read in binary mode
read MD5 sums from the FILEs and check them
read in text mode (default)
The following three options are useful only when verifying checksums:
don't print OK for each successfully verified file
don't output anything, status code shows success
warn about improperly formatted checksum lines
with --check, exit non-zero for any invalid input
--help display this help and exit
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.
The MD5 algorithm should not be used any more for security related pur-
poses. Instead, better use an SHA-2 algorithm, implemented in the pro-
grams sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1)
Written by Ulrich Drepper, Scott Miller, and David Madore.
Report md5sum bugs to firstname.lastname@example.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report md5sum translation bugs to <http://translationproject.org/team/>
should give you access to the complete manual.
GNU coreutils 8.12.197-032bb September 2011 MD5SUM(1)
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