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author | Kiyoshi Aman <kiyoshi.aman+adelie@gmail.com> | 2019-02-01 22:55:37 +0000 |
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committer | Kiyoshi Aman <kiyoshi.aman+adelie@gmail.com> | 2019-02-03 18:22:05 -0600 |
commit | 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe (patch) | |
tree | 154a22fe556b49e6927197336f8bf91b12eacd5e /usr.bin/cmp/cmp.1 | |
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initial population
Diffstat (limited to 'usr.bin/cmp/cmp.1')
-rw-r--r-- | usr.bin/cmp/cmp.1 | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/usr.bin/cmp/cmp.1 b/usr.bin/cmp/cmp.1 new file mode 100644 index 0000000..e61f62c --- /dev/null +++ b/usr.bin/cmp/cmp.1 @@ -0,0 +1,122 @@ +.\" $NetBSD: cmp.1,v 1.13 2017/07/03 21:34:18 wiz Exp $ +.\" +.\" 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. 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 +.\" +.Dd December 13, 2016 +.Dt CMP 1 +.Os +.Sh NAME +.Nm cmp +.Nd compare two files +.Sh SYNOPSIS +.Nm +.Op Fl c +.Op Fl l | Fl s +.Ar file1 file2 +.Op Ar skip1 Op Ar skip2 +.Sh DESCRIPTION +The cmp utility compares two files of any type and writes the results +to the standard output. +By default, +.Nm +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 c +Do the compare using +.Xr getc 3 +rather than +.Xr mmap 2 . +Combined with the +.Fl l +flag, this can be helpful in locating an I/O error in the underlying +device. +.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''. +.Sh EXIT STATUS +The +.Nm +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 +writes to standard output that EOF was reached in the shorter +file (before any differences were found). +.It >1 +An error occurred. +.El +.Sh SEE ALSO +.Xr comm 1 , +.Xr diff 1 , +.Xr diff3 1 , +.Xr sdiff 1 +.Sh STANDARDS +The +.Nm +utility is expected to be +.St -p1003.2 +compatible. +.Sh HISTORY +The +.Nm +utility first appeared in +.At v1 . |