cmp(1) - NetBSD Manual Pages

CMP(1)                      NetBSD Reference Manual                     CMP(1)


NAME
cmp - compare two files
SYNOPSIS
cmp [-l | -s] file1 file2 [skip1 [skip2]]
DESCRIPTION
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 differ- ence occurred is reported. Bytes and lines are numbered beginning with one. The following options are available: -l Print the byte number (decimal) and the differing byte values (oc- tal) for each difference. -s Print nothing for differing files; return exit status only. The optional arguments skip1 and skip2 are the byte offsets from the be- ginning of file1 and file2, respectively, where the comparison will be- gin. The offset is decimal by default, but may be expressed as an hex- adecimal or octal value by preceding it with a leading ``0x'' or ``0''. 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.
SEE ALSO
diff(1), diff3(1)
STANDARDS
The cmp utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compati- ble. NetBSD 1.6 June 6, 1993 1

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