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1 .TH TO-GZIP 1 "2021 Jan 15" littleutils
2 .SH NAME
3 to-gzip \- converts .Z, .lzo, .zip, and .rar files to gzip format
4 .SH SYNOPSIS
15 .SH DESCRIPTION
16 \fBto-gzip\fR recompresses files compressed with the \fBcompress\fR,
17 \fBlzop\fR, and/or \fBzip\fR utilities into \fIgzip\fR format. The newly
18 compressed files will usually have a \fI.gz\fR or a \fI.tgz\fR extension. If a
19 specified file is actually a URL, it will be downloaded using \fBwget\fR and
20 then recompressed.
21 .SH OPTIONS
24 Prefer IPv4 when downloading a URL.
27 Prefer IPv6 when downloading a URL.
30 After each file is compressed, delete the original.
33 Print help and quit.
36 Once a file is successfully recompressed, delete the larger of the original
37 file or the new one. This option maximizes disk space savings and is
38 incompatible with the \fB\-d\fR option.
41 Do not overwrite the target \fI.gz\fR or \fI.tgz\fR file if it already exists.
44 Use multi-threaded \fBpigz\fR instead of \fBgzip\fR to utilize multiple cores
45 during compression. Note that the output file, while being fully compatible
46 with \fBgzip\fR, will generally be slightly larger. Specifying a
47 \fInum_cores\fR value of zero will utilize all available cores.
50 Make the timestamp of new files match those of the old files.
51 .SH "SEE ALSO"
52 \fBgzip\fR(1), \fBpigz\fR(1), \fBcompress\fR(1), \fBlzop\fR(1), \fBzip\fR(1),
53 \fBrar2tarcat\fR(1), \fBzip2tarcat\fR(1), \fBwget\fR(1)
54 .SH COPYRIGHT
55 Copyright (C) 2011-2021 by Brian Lindholm. This program is free software; you
56 can use it, redistribute it, and/or modify it under the terms of the GNU
57 General Public License as published by the Free Software Foundation; either
58 version 3, or (at your option) any later version.
60 This program is distributed in the hope that it will be useful, but WITHOUT ANY
61 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
62 PARTICULAR PURPOSE. See the GNU General Public License for more details.