Linux "cmp" Command Line Options and Examples
compare two files byte by byte

Compare two files byte by byte. The optional SKIP1 and SKIP2 specify the number of bytes to skip at the beginning of each file (zero by default). Mandatory arguments to long options are mandatory for short options too.


cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]]

Command Line Options:

print differing bytes
cmp -b ...
skip first SKIP bytes of both inputs
cmp -i ...
output byte numbers and differing byte values
cmp -l ...
compare at most LIMIT bytes
cmp -n ...
suppress all normal output
cmp -s ...
display this help and exit
cmp --help ...
output version information and exitSKIP values may be followed by the following multiplicative suffixes: kB 1000, K 1024, MB 1,000,000, M 1,048,576, GB 1,000,000,000, G1,073,741,824, and so on for T, P, E, Z, Y.If a FILE is '-' or missing, read standard input. Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.AUTHORWritten by Torbjorn Granlund and David MacKenzie.REPORTING BUGSReport bugs to: bug-diffutils@gnu.orgGNU diffutils home page: <>General help using GNU software: <>COPYRIGHTCopyright © 2017 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.
cmp -v ...