808a36ef65
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
114 lines
3.6 KiB
Groff
114 lines
3.6 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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.\" $FreeBSD$
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.\"
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.Dd June 6, 1993
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.Dt CMP 1
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.Os
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.Sh NAME
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.Nm cmp
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.Nd compare two files
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.Sh SYNOPSIS
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.Nm cmp
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.Op Fl l | Fl s
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.Ar file1 file2
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.Op Ar skip1 Op Ar skip2
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.Sh DESCRIPTION
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The cmp 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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.Nm
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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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.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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.Bl -tag -width flag
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.It Fl l
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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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.It Fl s
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Print nothing for differing files; return exit
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status only.
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.El
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.Pp
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The optional arguments
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.Ar skip1
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and
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.Ar skip2
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are the byte offsets from the beginning of
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.Ar file1
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and
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.Ar 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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.Nm cmp
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utility exits with one of the following values:
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.Bl -tag -width 4n
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.It 0
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The files are identical.
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.It 1
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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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.Fl s
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option has not been specified,
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.Nm 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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.It >1
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An error occurred.
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.El
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.Sh SEE ALSO
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.Xr diff 1 ,
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.Xr diff3 1
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.Sh STANDARDS
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The
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.Nm cmp
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utility is expected to be
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.St -p1003.2
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compatible.
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v1 .
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