1.\" $NetBSD: zdiff.1,v 1.5 2010/04/14 19:52:05 wiz Exp $ 2.\" $OpenBSD: zdiff.1,v 1.2 2003/07/13 17:39:14 millert Exp $ 3.\" 4.\" Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com> 5.\" Copyright (c) 2010 Joerg Sonnenberger <joerg@NetBSD.org> 6.\" 7.\" Permission to use, copy, modify, and distribute this software for any 8.\" purpose with or without fee is hereby granted, provided that the above 9.\" copyright notice and this permission notice appear in all copies. 10.\" 11.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18.\" 19.\" Sponsored in part by the Defense Advanced Research Projects 20.\" Agency (DARPA) and Air Force Research Laboratory, Air Force 21.\" Materiel Command, USAF, under agreement number F39502-99-1-0512. 22.\" 23.Dd April 14, 2010 24.Dt ZDIFF 1 25.Os 26.Sh NAME 27.Nm zcmp , 28.Nm zdiff 29.Nd compare compressed files 30.Sh SYNOPSIS 31.Nm zcmp 32.Op Ar options 33.Ar file 34.Op Ar file2 35.Nm zdiff 36.Op Ar options 37.Ar file 38.Op Ar file2 39.Sh DESCRIPTION 40.Nm zcmp 41and 42.Nm zdiff 43are filters that invoke 44.Xr cmp 1 45or 46.Xr diff 1 47respectively to compare compressed files. 48Any 49.Ar options 50that are specified are passed to 51.Xr cmp 1 52or 53.Xr diff 1 . 54.Pp 55If only 56.Ar file1 57is specified, it is compared against a file with the same name, but 58with the extension removed. 59When both 60.Ar file1 61or 62.Ar file2 63are specified, either file may be compressed. 64.Pp 65Extensions handled by 66.Xr gzip 1 : 67.Bl -bullet -compact 68.It 69z, Z, 70.It 71gz, 72.It 73taz, 74.It 75tgz. 76.El 77.Pp 78Extensions handled by 79.Xr bzip2 1 : 80.Bl -bullet -compact 81.It 82bz, 83.It 84bz2, 85.It 86tbz, 87.It 88tbz2. 89.El 90.Pp 91Extensions handled by 92.Xr xz 1 : 93.Bl -bullet -compact 94.It 95lzma, 96.It 97xz, 98.It 99tlz, 100.It 101txz. 102.El 103.Sh ENVIRONMENT 104.Bl -tag -width "TMPDIR" 105.It Ev TMPDIR 106Directory in which to place temporary files. 107If unset, 108.Pa /tmp 109is used. 110.El 111.Sh FILES 112.Bl -tag -width "/tmp/zdiff.XXXXXXXXXX" -compact 113.It Pa /tmp/zcmp.XXXXXXXXXX 114Temporary file for 115.Nm zcmp . 116.It Pa /tmp/zdiff.XXXXXXXXXX 117Temporary file for 118.Nm zdiff . 119.El 120.Sh SEE ALSO 121.Xr bzip2 1 , 122.Xr cmp 1 , 123.Xr diff 1 , 124.Xr gzip 1 , 125.Xr xz 1 126.Sh CAVEATS 127.Nm zcmp 128and 129.Nm zdiff 130rely solely on the file extension to determine what is, or is not, 131a compressed file. 132Consequently, the following are not supported as arguments: 133.Bl -dash 134.It 135directories 136.It 137device special files 138.It 139filenames indicating the standard input 140.Pq Dq \- 141.El 142