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115 lines
3.8 KiB
Groff
115 lines
3.8 KiB
Groff
.\" Copyright (c) 1987, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)cmp.1 8.1 (Berkeley) 6/6/93
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.\" $Id: cmp.1,v 1.1 1997/10/03 05:13:22 gdr Exp $
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.\"
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.TH CMP 1 "28 September 1997" GNO "Commands and Applications"
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.SH NAME
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.BR cmp
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\- compare two files
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.SH SYNOPSIS
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.BR cmp " [" -l " | " -s "] ["
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.BR -r
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]
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.IR file1
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.IR file2
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[
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.IR skip1
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[
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.IR skip2
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] ]
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.SH DESCRIPTION
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The
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.BR cmp
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utility compares two files of any type and writes the results
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to the standard output.
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By default,
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.BR cmp
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is silent if the files are the same; if they differ, the byte
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and line number at which the first difference occurred is reported.
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Also by default,
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.BR cmp
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also considers the resource forks of the files, and will make note
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if only one of the files has a resource fork.
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.PP
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Bytes and lines are numbered beginning with one.
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.PP
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The following options are available:
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.IP \fB-l\fR
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Print the byte number (decimal) and the differing
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byte values (octal) for each difference.
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.IP \fB-s\fR
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Print nothing for differing files; return exit
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status only.
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.IP \fB-r\fR
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Ignore resource forks when comparing.
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.PP
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The optional arguments
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.IR skip1
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and
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.IR skip2
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are the byte offsets from the beginning of
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.IR file1
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and
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.IR file2 ,
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respectively, where the comparison will begin.
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The offset is decimal by default, but may be expressed as an hexadecimal
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or octal value by preceding it with a leading ``0x'' or ``0''.
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.PP
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The
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.BR cmp
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utility exits with one of the following values:
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.IP \fB0\fR
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The files are identical.
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.IP \fB1\fR
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The files are different; this includes the case
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where one file is identical to the first part of
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the other.
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In the latter case, if the
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.IR -s
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option has not been specified,
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.BR cmp
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writes to standard output that EOF was reached in the shorter
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file (before any differences were found).
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.IP \fB>1\fR
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An error occurred.
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.SH SEE ALSO
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.BR diff(1),
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.BR diff3(1)
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.SH HISTORY
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The
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.BR cmp
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command for GNO/ME v2.0.6 is based on FreeBSD source code.
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