1.\" Copyright (c) 1987, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" from: @(#)cmp.1 6.7 (Berkeley) 6/27/91 36.\" $Id: cmp.1,v 1.3 1993/09/21 22:37:52 jtc Exp $ 37.\" 38.Dd June 27, 1991 39.Dt CMP 1 40.Os 41.Sh NAME 42.Nm cmp 43.Nd Compare two files. 44.Sh SYNOPSIS 45.Nm cmp 46.Op Fl l Li \&| Fl s 47.Ar file1 file2 48.Sh DESCRIPTION 49The cmp utility compares two files of any type and 50writes the results to the standard output. 51By default, 52.Nm 53is silent if the files are the same; if they differ, the byte 54and line number at which the first difference occurred is reported. 55.Pp 56Bytes and lines are numbered beginning with one. 57.Pp 58The following options are available: 59.Bl -tag -width Ds 60.It Fl l 61Print the byte number (decimal) and the differing 62byte values (octal) for each difference. 63.It Fl s 64Print nothing for differing files; return exit 65status only. 66.El 67.Pp 68If 69.Ar file1 70or 71.Ar file2 72is ``-'', the the standard input is used. 73.Pp 74The 75.Nm cmp 76utility exits with one of the following values: 77.Bl -tag -width 4n 78.It 0 79The files are identical. 80.It 1 81The files are different; this includes the case 82where one file is identical to the first part of 83the other. 84In the latter case, if the 85.Fl s 86option has 87not been specified, cmp writes to standard error 88that EOF was reached in the shorter file (before 89any differences were found). 90.It >1 91An error occurred. 92.El 93.Sh SEE ALSO 94.Xr diff 1 , 95.Xr diff3 1 96.Sh STANDARDS 97The 98.Nm cmp 99utility conforms to 100.St -p1003.2-92 . 101