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author | delphij <delphij@FreeBSD.org> | 2007-01-26 10:19:08 +0000 |
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committer | delphij <delphij@FreeBSD.org> | 2007-01-26 10:19:08 +0000 |
commit | 20898601354d3c57cf96586bb8940674bd793e59 (patch) | |
tree | e8c13cf34b1eb5603f26abafb36a705c40549e37 /usr.bin/gzip/zdiff.1 | |
parent | 5e40eb222d8faef11e6c7575559461c42b5ec9f1 (diff) | |
download | FreeBSD-src-20898601354d3c57cf96586bb8940674bd793e59.zip FreeBSD-src-20898601354d3c57cf96586bb8940674bd793e59.tar.gz |
Replace the GNU gzip with a slightly modified NetBSD gzip. The
NetBSD version is a feature-to-feature re-implementation of GNU
gzip using the freely-redistributable zlib and this version is
expected to be mostly bug-to-bug compatible with the GNU
implementation.
- Because this is a piece of mature code and we want to make
changes so it is added directly rather than importing to
src/contrib.
- Connect newly added code to src/usr.bin/ and rescue/rescue
build.
- Disconnect the GNU gzip code from build for now, they will
be eventually removed completely.
- Provide two new src.conf(5) knobs, WITHOUT_BZIP2_SUPPORT and
WITHOUT_BZIP2.
Tested by: kris (full exp-7 pointyhat build)
Approved by: core (importing a 4-clause BSD licensed file)
Approved by: re (adding new utility during -HEAD code slush)
Diffstat (limited to 'usr.bin/gzip/zdiff.1')
-rw-r--r-- | usr.bin/gzip/zdiff.1 | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/usr.bin/gzip/zdiff.1 b/usr.bin/gzip/zdiff.1 new file mode 100644 index 0000000..2a6a4c8 --- /dev/null +++ b/usr.bin/gzip/zdiff.1 @@ -0,0 +1,109 @@ +.\" $NetBSD: zdiff.1,v 1.3 2003/12/28 12:48:03 wiz Exp $ +.\" $OpenBSD: zdiff.1,v 1.2 2003/07/13 17:39:14 millert Exp $ +.\" +.\" Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com> +.\" +.\" 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. +.\" +.\" $FreeBSD$ +.Dd January 26, 2007 +.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. +Such files generally have a +.Dq Z +or +.Dq gz +extension (both the +.Xr compress 1 +and +.Xr gzip 1 +formats are supported). +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. +.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 cmp 1 , +.Xr compress 1 , +.Xr diff 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 |