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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
    5 \fBto-gzip\fR
    6 [\fB\-(IPv)4\fR]
    7 [\fB\-(IPv)6\fR]
    8 [\fB\-d(elete_original)\fR]
    9 [\fB\-h(elp)\fR]
   10 [\fB\-k(eep_smallest)\fR]
   11 [\fB\-n(o_overwrite)\fR]
   12 [\fB\-p\fR\~\fInum_cores\fR]
   13 [\fB\-t(imestamp_retain)\fR]
   14 \fIfile/URL\|.\|.\|.\fR
   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.
   22 .TP
   23 \fB\-4\fR
   24 Prefer IPv4 when downloading a URL.
   25 .TP
   26 \fB\-6\fR
   27 Prefer IPv6 when downloading a URL.
   28 .TP
   29 \fB\-d\fR
   30 After each file is compressed, delete the original.
   31 .TP
   32 \fB\-h\fR
   33 Print help and quit.
   34 .TP
   35 \fB\-k\fR
   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.
   39 .TP
   40 \fB\-n\fR
   41 Do not overwrite the target \fI.gz\fR or \fI.tgz\fR file if it already exists.
   42 .TP
   43 \fB\-p\fR\~\fInum_cores\fR
   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.
   48 .TP
   49 \fB\-t\fR
   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)
   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.