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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	     Print the byte number (decimal) and the differing byte values
	     (octal) for each difference.

     -s	     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
     beginning of file1	and file2, respectively, where the comparison will
     begin.  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'') compati-
     ble.

HISTORY
     A cmp command appeared in Version 1 AT&T UNIX.

FreeBSD	10.1		       December	19, 2006		  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | SEE ALSO | STANDARDS | HISTORY

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