116 lines
3.6 KiB
Groff
116 lines
3.6 KiB
Groff
.\" Copyright (c) 1987, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
.\" the Institute of Electrical and Electronics Engineers, Inc.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)cmp.1 8.1 (Berkeley) 6/6/93
|
|
.\" $Id: cmp.1,v 1.5 1997/06/26 11:22:10 charnier Exp $
|
|
.\"
|
|
.Dd June 6, 1993
|
|
.Dt CMP 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cmp
|
|
.Nd compare two files
|
|
.Sh SYNOPSIS
|
|
.Nm cmp
|
|
.Op Fl l | Fl s
|
|
.Ar file1 file2
|
|
.Op Ar skip1 Op Ar skip2
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm cmp
|
|
utility compares two files of any type and writes the results
|
|
to the standard output.
|
|
By default,
|
|
.Nm cmp
|
|
is silent if the files are the same; if they differ, the byte
|
|
and line number at which the first difference occurred is reported.
|
|
.Pp
|
|
Bytes and lines are numbered beginning with one.
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width flag
|
|
.It Fl l
|
|
Print the byte number (decimal) and the differing
|
|
byte values (octal) for each difference.
|
|
.It Fl s
|
|
Print nothing for differing files; return exit
|
|
status only.
|
|
.El
|
|
.Pp
|
|
The optional arguments
|
|
.Ar skip1
|
|
and
|
|
.Ar skip2
|
|
are the byte offsets from the beginning of
|
|
.Ar file1
|
|
and
|
|
.Ar 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 ``0''.
|
|
.Pp
|
|
The
|
|
.Nm cmp
|
|
utility exits with one of the following values:
|
|
.Bl -tag -width 4n
|
|
.It 0
|
|
The files are identical.
|
|
.It 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
|
|
.Fl s
|
|
option has not been specified,
|
|
.Nm cmp
|
|
writes to standard error that EOF was reached in the shorter
|
|
file (before any differences were found).
|
|
.It >1
|
|
An error occurred.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr diff 1 ,
|
|
.Xr diff3 1
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm cmp
|
|
utility is expected to be
|
|
.St -p1003.2
|
|
compatible.
|
|
.Sh HISTORY
|
|
A
|
|
.Nm cmp
|
|
command appeared in
|
|
.At v1 .
|