1GNU(1) User Commands GNU(1)
2
3
4
6 GNU cmp - compare two files byte by byte
7
9 cmp [OPTION]... FILE1 [FILE2 [SKIP1 [SKIP2]]]
10
12 Compare two files byte by byte.
13
14 The optional SKIP1 and SKIP2 specify the number of bytes to skip at the
15 beginning of each file (zero by default).
16
17 Mandatory arguments to long options are mandatory for short options
18 too.
19
20 -b, --print-bytes
21 print differing bytes
22
23 -i, --ignore-initial=SKIP
24 skip first SKIP bytes of both inputs
25
26 -i, --ignore-initial=SKIP1:SKIP2
27 skip first SKIP1 bytes of FILE1 and first SKIP2 bytes of FILE2
28
29 -l, --verbose
30 output byte numbers and differing byte values
31
32 -n, --bytes=LIMIT
33 compare at most LIMIT bytes
34
35 -s, --quiet, --silent
36 suppress all normal output
37
38 --help display this help and exit
39
40 -v, --version
41 output version information and exit
42
43 SKIP values may be followed by the following multiplicative suffixes:
44 kB 1000, K 1024, MB 1,000,000, M 1,048,576, GB 1,000,000,000, G
45 1,073,741,824, and so on for T, P, E, Z, Y.
46
47 If a FILE is '-' or missing, read standard input. Exit status is 0 if
48 inputs are the same, 1 if different, 2 if trouble.
49
51 Written by Torbjorn Granlund and David MacKenzie.
52
54 Report bugs to: bug-diffutils@gnu.org
55 GNU diffutils home page: <http://www.gnu.org/software/diffutils/>
56 General help using GNU software: <https://www.gnu.org/gethelp/>
57
59 Copyright © 2018 Free Software Foundation, Inc. License GPLv3+: GNU
60 GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
61 This is free software: you are free to change and redistribute it.
62 There is NO WARRANTY, to the extent permitted by law.
63
65 diff(1), diff3(1), sdiff(1)
66
67 The full documentation for GNU is maintained as a Texinfo manual. If
68 the info and GNU programs are properly installed at your site, the com‐
69 mand
70
71 info GNU
72
73 should give you access to the complete manual.
74
75
76
77diffutils 3.7 October 2020 GNU(1)