\" $NetBSD: zdiff.1,v 1.5 2010/04/14 19:52:05 wiz Exp $
\" $OpenBSD: zdiff.1,v 1.2 2003/07/13 17:39:14 millert Exp $
\"
\" Copyright (c) 2003 Todd C. Miller <
[email protected]>
\" Copyright (c) 2010 Joerg Sonnenberger <
[email protected]>
\"
\" Permission to use, copy, modify, and distribute this software for any
\" purpose with or without fee is hereby granted, provided that the above
\" copyright notice and this permission notice appear in all copies.
\"
\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
\"
\" Sponsored in part by the Defense Advanced Research Projects
\" Agency (DARPA) and Air Force Research Laboratory, Air Force
\" Materiel Command, USAF, under agreement number F39502-99-1-0512.
\"
Dd April 14, 2010
Dt ZDIFF 1
Os
Sh NAME
Nm zcmp ,
Nm zdiff
Nd compare compressed files
Sh SYNOPSIS
Nm zcmp
Op Ar options
Ar file
Op Ar file2
Nm zdiff
Op Ar options
Ar file
Op Ar file2
Sh DESCRIPTION
Nm zcmp
and
Nm zdiff
are filters that invoke
Xr cmp 1
or
Xr diff 1
respectively to compare compressed files.
Any
Ar options
that are specified are passed to
Xr cmp 1
or
Xr diff 1 .
Pp
If only
Ar file1
is specified, it is compared against a file with the same name, but
with the extension removed.
When both
Ar file1
or
Ar file2
are specified, either file may be compressed.
Pp
Extensions handled by
Xr gzip 1 :
Bl -bullet -compact
It
z, Z,
It
gz,
It
taz,
It
tgz.
El
Pp
Extensions handled by
Xr bzip2 1 :
Bl -bullet -compact
It
bz,
It
bz2,
It
tbz,
It
tbz2.
El
Pp
Extensions handled by
Xr xz 1 :
Bl -bullet -compact
It
lzma,
It
xz,
It
tlz,
It
txz.
El
Sh ENVIRONMENT
Bl -tag -width "TMPDIR"
It Ev TMPDIR
Directory in which to place temporary files.
If unset,
Pa /tmp
is used.
El
Sh FILES
Bl -tag -width "/tmp/zdiff.XXXXXXXXXX" -compact
It Pa /tmp/zcmp.XXXXXXXXXX
Temporary file for
Nm zcmp .
It Pa /tmp/zdiff.XXXXXXXXXX
Temporary file for
Nm zdiff .
El
Sh SEE ALSO
Xr bzip2 1 ,
Xr cmp 1 ,
Xr diff 1 ,
Xr gzip 1 ,
Xr xz 1
Sh CAVEATS
Nm zcmp
and
Nm zdiff
rely solely on the file extension to determine what is, or is not,
a compressed file.
Consequently, the following are not supported as arguments:
Bl -dash
It
directories
It
device special files
It
filenames indicating the standard input
Pq Dq \-
El
