1 .TH CMP 1 
2 .SH NAME
3 cmp \- compare two files
4 .SH SYNOPSIS
5 .B cmp
6 [
7 .B -lsL
8 ]
9 .I file1 file2
10 [
11 .I offset1
12 [
13 .I offset2
14 ]
15 ]
16 .SH DESCRIPTION
17 The two files are
18 compared.
19 A diagnostic results if the contents differ, otherwise
20 there is no output.
21 .PP
22 The options are:
23 .TP
24 .B l
25 Print the byte number (decimal) and the
26 differing bytes (hexadecimal) for each difference.
27 .TP
28 .B s
29 Print nothing for differing files,
30 but set the exit status.
31 .TP
32 .B L
33 Print the line number of the first differing byte.
34 .PP
35 If offsets are given,
36 comparison starts at the designated byte position
37 of the corresponding file.
38 Offsets that begin with
39 .B 0x
40 are hexadecimal;
41 with
42 .BR 0 ,
43 octal; with anything else, decimal.
44 .SH SOURCE
45 .B \*9/src/cmd/cmp.c
46 .SH "SEE ALSO"
47 .IR diff (1) 
48 .SH DIAGNOSTICS
49 If a file is inaccessible or missing, the exit status is
50 .LR open .
51 If the files are the same, the exit status is empty (true).
52 If they are the same except that one is longer than the other, the exit status is
53 .LR EOF .
54 Otherwise
55 .I cmp
56 reports the position of the first disagreeing byte and the exit status is
57 .LR differ .