.\"	$OpenBSD: znew.1,v 1.4 2007/05/31 19:20:09 jmc Exp $
.\"
.\" Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
.\"
.\" 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.
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt ZNEW 1
.Os
.Sh NAME
.Nm znew
.Nd convert compressed files to gzipped files
.Sh SYNOPSIS
.Nm
.Op Fl 9fKtv
.Ar
.Sh DESCRIPTION
The
.Nm
utility uncompresses files compressed by
.Xr compress 1
and recompresses them with
.Xr gzip 1 .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl 9
Use the -9 mode of
.Xr gzip 1 ,
achieving better compression at the cost of slower execution.
.It Fl f
Overwrite existing
.Sq .gz
files.
Unless this option is specified,
.Nm
refuses to overwrite existing files.
.It Fl K
Keep the original
.Sq .Z
file if it uses less disk blocks than the gzipped one.
A disk block is 1024 bytes.
.It Fl t
Test integrity of the gzipped file before deleting the original file.
If the integrity check fails, the original
.Sq .Z
file is not removed.
.It Fl v
Print a report specifying the achieved compression ratios.
.El
.Sh SEE ALSO
.Xr compress 1 ,
.Xr gzip 1
.Sh CAVEATS
The
.Nm
utility tries to maintain the file mode of the original file.
If the original file is not writable, it will be unable to do so and
.Nm
will print a warning.