Lunzip is a decompressor for lzip files. It is written in C and its
small size makes it well suited for embedded devices or software
installers that need to decompress files but do not need compression
Lunzip replaces every file given in the command line with a decompressed
version of itself. Each decompressed file has the same modification
date, permissions, and, when possible, ownership as the corresponding
compressed file. Lunzip is able to read from some types of non regular
files if the "--stdout" option is specified.
If no file names are specified, lunzip decompresses from standard input
to standard output. In this case, lunzip will decline to read compressed
input from a terminal.
Lunzip will correctly decompress a file which is the concatenation of
two or more compressed files. The result is the concatenation of the
corresponding uncompressed files. Integrity testing of concatenated
compressed files is also supported.
The amount of memory required by lunzip to decompress a file is only a
few tens of KiB larger than the dictionary size used to compress that
Learn more about lzip in the Lzip Home Page.
Lunzip only includes a man page and a README file. For information about
the lzip file format see the online manual of lzip below.
The manual is available in the info system of the GNU
Operating System. Use info to access the top level info
page. Use info lzip to access the lzip section directly.
An online manual for lzip can be found
The latest released version of lunzip can be found
You may also subscribe to
and receive an email every time a new version is released.
How to Get Help
For general discussion of bugs in lunzip the mailing list
is the most appropriate forum. Please send messages as plain text.
Please do not send messages encoded as HTML nor encoded as base64 MIME
nor included as multiple formats. Please include a descriptive subject
line. If all of the subject are "bug in lunzip" it is impossible to
An archive of the bug report mailing list is available at
How to Help
To contact the author, either to report a bug or to contribute fixes or
improvements, send mail to
Please send messages as plain text. If posting patches they should be in
unified diff format against the latest version. They should include a
See also the
project page at Savannah.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU
General Public License as published by the Free Software Foundation,
either version 3 of the License, or (at your option) any later version.
Copyright © 2013 Antonio Diaz Diaz
Lzip logo Copyright © 2013 Sonia Diaz Pacheco
You are free to copy, modify and distribute all or part of this article