Linux repositories inspector
GNU coreutils 8.32
March 2020
Aliases: md5sum.textutils(1), md5sum.textutils(1), md5sum.textutils(1), md5sum.textutils(1), md5sum.textutils(1), md5sum.textutils(1), md5sum.textutils(1)


The basic file, shell and text manipulation utilities of the GNU operating system


coreutils common optional components


Documentation for the GNU Core Utilities


md5sum - compute and check MD5 message digest


md5sum [\,OPTION\/]... [\,FILE\/]...


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)
-z, --zero end each output line with NUL, not newline, and disable file name escaping

The following five options are useful only when verifying checksums:

don’t fail or report status for missing files
--quiet don’t print OK for each successfully verified file
don’t output anything, status code shows success
exit non-zero for improperly formatted checksum lines
-w, --warn warn about improperly formatted checksum lines
--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 space, a character indicating input mode (’*’ for binary, ’ ’ for text or where binary is insignificant), and name for each FILE.
Note: There is no difference between binary mode and text mode on GNU systems.


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)


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


GNU coreutils online help: <>
Report any translation bugs to <>


Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


Full documentation <>
or available locally via: info \(aq(coreutils) md5sum invocation\(aq
⇧ Top