CMP(1) Commands and Applications CMP(1)
cmp - compare two files
cmp [-l | -s] [ -r ] file1 file2 [ skip1 [ skip2 ] ]
The cmp utility compares two files of any type and writes the results
to the standard output. By default, cmp is silent if the files are the
same; if they differ, the byte and line number at which the first dif-
ference occurred is reported. Also by default, cmp also considers the
resource forks of the files, and will make note if only one of the
files has a resource fork.
Bytes and lines are numbered beginning with one.
The following options are available:
-l Print the byte number (decimal) and the differing byte values
(octal) for each difference.
-s Print nothing for differing files; return exit status only.
-r Ignore resource forks when comparing.
The optional arguments skip1 and skip2 are the byte offsets from the
beginning of file1 and file2, respectively, where the comparison will
begin. The offset is decimal by default, but may be expressed as an
hexadecimal or octal value by preceding it with a leading ''0x'' or
The cmp utility exits with one of the following values:
0 The files are identical.
1 The files are different; this includes the case where one file
is identical to the first part of the other. In the latter
case, if the -s option has not been specified, cmp writes to
standard output that EOF was reached in the shorter file (before
any differences were found).
>1 An error occurred.
The cmp command for GNO/ME v2.0.6 is based on FreeBSD source code.
GNO 28 September 1997 CMP(1)
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