CMP(1) User Commands CMP(1) NAME cmp - compare two files byte by byte SYNOPSIS cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]] DESCRIPTION Compare two files byte by byte. The optional SKIP1 and SKIP2 specify the number of bytes to skip at the be- ginning of each file (zero by default). Mandatory arguments to long options are mandatory for short options too. -b, --print-bytes print differing bytes -i, --ignore-initial=SKIP skip first SKIP bytes of both inputs -i, --ignore-initial=SKIP1:SKIP2 skip first SKIP1 bytes of FILE1 and first SKIP2 bytes of FILE2 -l, --verbose output byte numbers and differing byte values -n, --bytes=LIMIT compare at most LIMIT bytes -s, --quiet, --silent suppress all normal output --help display this help and exit -v, --version output version information and exit SKIP 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, G 1,073,741,824, and so on for T, P, E, Z, Y. If a FILE is '-' or missing, read standard input. Exit status is 0 if in- puts are the same, 1 if different, 2 if trouble. AUTHOR Written by Torbjorn Granlund and David MacKenzie. REPORTING BUGS Report bugs to: bug-diffutils@gnu.org GNU diffutils home page: <https://www.gnu.org/software/diffutils/> General help using GNU software: <https://www.gnu.org/gethelp/> COPYRIGHT Copyright (C) 2025 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://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. SEE ALSO diff(1), diff3(1), sdiff(1) The full documentation for cmp is maintained as a Texinfo manual. If the info and cmp programs are properly installed at your site, the command info cmp should give you access to the complete manual. diffutils 3.12 April 2025 CMP(1)
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