- Calculate the MD5 checksum for a file:md5sum [filename1]- Calculate MD5 checksums for multiple files:md5sum [filename1] [filename2]- Read a file of MD5SUMs and verify all files have matching checksums:md5sum -c [filename.md5]
md5sum [,OPTION/]... [,FILE/]...
Print or check MD5 (128-bit) checksums.
With no FILE, or when FILE is -, read standard input.
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.
The MD5 algorithm should not be used any more for security related purposes. Instead, better use an SHA-2 algorithm, implemented in the programs sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1)
Written by Ulrich Drepper, Scott Miller, and David Madore.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report md5sum translation bugs to <http://translationproject.org/team/>
Copyright © 2016 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.
Full documentation at: <http://www.gnu.org/software/coreutils/md5sum> or available locally via: info '(coreutils) md5sum invocation'