99 lines
3.2 KiB
Groff
99 lines
3.2 KiB
Groff
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.\" Copyright (c) 1987, 1990 The Regents of the University of California.
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.\" 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 6.7 (Berkeley) 6/27/91
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.\"
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.Dd June 27, 1991
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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 Li \&| Fl s
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.Ar file1 file2
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.Sh DESCRIPTION
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The cmp utility compares two files of any type and
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writes the results 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 Ds
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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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If
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.Ar file1
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or
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.Ar file2
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is ``-'', the the standard input is used.
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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
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not been specified, cmp writes to standard error
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that EOF was reached in the shorter file (before
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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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function is expected to be POSIX 1003.2 compatible.
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