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    1 .TH TO-BZIP 1 "2021 Jan 15" littleutils
    2 .SH NAME
    3 to-bzip \- converts .Z, .lzo, .zip, .rar, and .gz files to bzip2 format
    5 \fBto-bzip\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-bzip\fR recompresses files compressed with the \fBcompress\fR,
   17 \fBlzop\fR, \fBzip\fR, and/or \fBgzip\fR utilities into \fIbzip2\fR format.
   18 The newly compressed files will usually have a \fI.bz2\fR or a \fI.tbz\fR
   19 extension.  If a specified file is actually a URL, it will be downloaded using
   20 \fBwget\fR and 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.bz2\fR or \fI.tbz\fR file if it already exists.
   42 .TP
   43 \fB\-p\fR\~\fInum_cores\fR
   44 Use multi-threaded \fBlbzip2\fR or \fBpbzip2\fR instead of \fBbzip2\fR to
   45 utilize multiple cores during compression.  Note that the output file, while
   46 being fully compatible with \fBbzip2\fR, will generally be slightly larger.
   47 Specifying a \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 \fBbzip2\fR(1), \fBlbzip2\fR(1), \fBpbzip2\fR(1), \fBcompress\fR(1),
   53 \fBlzop\fR(1), \fBzip\fR(1), \fBgzip\fR(1), \fBrar2tarcat\fR(1),
   54 \fBzip2tarcat\fR(1), \fBwget\fR(1)
   56 Copyright (C) 2006-2021 by Brian Lindholm.  This program is free software; you
   57 can use it, redistribute it, and/or modify it under the terms of the GNU
   58 General Public License as published by the Free Software Foundation; either
   59 version 3, or (at your option) any later version.
   61 This program is distributed in the hope that it will be useful, but WITHOUT ANY
   62 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
   63 PARTICULAR PURPOSE.  See the GNU General Public License for more details.