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116 lines
4 KiB
Groff
Vendored
116 lines
4 KiB
Groff
Vendored
.TH lha 1
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.SH NAME
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lha \- compression tool for .lzh archive files.
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.SH SYNOPSIS
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.B lha [-]{lvtxe[q{num}][finv]}[w=<dir>] archive_file [file...]
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.SH DESCRIPTION
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.PP
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.B lha
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is a tool for extracting .lzh archive files. It also supports variants
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of the .lzh archive, such as .lzs and .pma.
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.PP
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This version of the lha tool is part of Lhasa, a free implementation
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of the .lzh format.
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.PP
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.SH COMMAND SYNTAX
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The lha tool has an unusual command syntax, compared to most other
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Unix commands. The first parameter to the program specifies the command
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to perform and all additional options. The second parameter specifies
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the path to the archive file to operate on. Following this is a list
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of wildcard patterns to match against the filenames of the archived
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files.
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.PP
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The first character of the command parameter specifies the command to
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perform, which is one of the following:
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.TP
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\fB-l\fR
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List contents of the specified archive.
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.TP
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\fB-v\fR
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Verbosely list contents of the specified archive.
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.TP
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\fB-t\fR
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Test the integrity of the specified archive: decompress its contents and
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check the CRC.
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.TP
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\fB-e\fR or \fB-x\fR
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Extract archive. Files are extracted to the current working directory
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unless the 'w' option is specified.
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.PP
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.SH OPTIONS
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The remainder of the command parameter is used to specify additional
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options:
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.TP
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\fBq[012]\fR
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Quiet mode. Higher numbers suppress more output. Level 0 is normal
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operation. If no number is specified, full suppression (level 2)
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is used. The quiet option also turns on the force overwrite option
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('f').
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.TP
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\fBf\fR
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Force overwrite of existing files: do not prompt.
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.TP
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\fBi\fR
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Ignore paths of archived files: extract all archived files to the
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same directory, ignoring subdirectories.
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.TP
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\fBn\fR
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Do not perform any actual operations: instead, perform a dry run of
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the requested operation and describe what would have been done on
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standard output.
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.TP
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\fBv\fR
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Verbose mode: causes extra information to be written to standard
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output.
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.TP
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\fBw=dir\fR
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Specify destination directory for extracting files. This must be
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the last option of the first parameter.
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.SH SEE ALSO
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\fBunzip\fR(1),
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\fBtar\fR(1),
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\fBgzip\fR(1),
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\fBbzip2\fR(1)
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.SH HISTORY
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The .lzh format originated with Kazuhiko Miki's MS\-DOS archive tool,
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LArc, using the LZSS algorithm developed by Haruhiko Okumura, and
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the .lzs filename extension. The container format was reused for
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LHarc, by Haruyasu Yoshizaki (Yoshi), which used a new algorithm
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named LZHUF and the .lzh extension. In later versions, LHarc was
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renamed to LHA and extended with more effective compression algorithms.
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.PP
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Versions of the LHA tool were later ported to various different
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operating systems, including the Amiga, Atari, MacOS, OS/2 and Unix.
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A tool for MSX\-DOS named PMarc reused the container format with a new
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compression algorithm (.pma extension).
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.PP
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The Unix version of the tool was developed by Masaru Oki, Nobutaka
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Watazaki and Tsugio Okamoto, but was released under a software
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license that does not conform to the Free Software or Open Source
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Definitions. Lhasa was developed as a drop\-in replacement that is
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Free Software and Open Source.
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.SH BUGS
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The current version does not allow the creation of new archive files.
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.PP
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Some obscure compression algorithms are not currently supported
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(\-lh2\-, \-lh3\-, \-lx1\-, \-lhx\-).
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.SH AUTHOR
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Lhasa was written and is maintained by Simon Howard.
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.SH COPYRIGHT
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Copyright \(co 2011, 2012 Simon Howard.
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.PP
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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.PP
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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