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CMP(1) FreeBSD General Commands Manual CMP(1) NAME cmp -- compare two files SYNOPSIS cmp [-l | -s | -x] [-hz] 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: -h Do not follow symbolic links. -l, --verbose Print the byte number (decimal) and the differing byte values (octal) for each difference. -s, --silent, --quiet Print nothing for differing files; return exit status only. -x Like -l but prints in hexadecimal and using zero as index for the first byte in the files. -z For regular files compare file sizes first, and fail the compari- son if they are not equal. 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 a hexa- decimal or octal value by preceding it with a leading ``0x'' or ``0''. EXIT STATUS 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 error 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") compatible. The -h, -x, and -z options are extensions to the standard. HISTORY A cmp command appeared in Version 1 AT&T UNIX. FreeBSD 13.0 May 1, 2018 FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | SEE ALSO | STANDARDS | HISTORY
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