35 lines
1.4 KiB
Plaintext
35 lines
1.4 KiB
Plaintext
#%Pmodule
|
|
|
|
module-whatis "free general-purpose data compression software"
|
|
module-url "https://tukaani.org/xz/"
|
|
module-license ""
|
|
module-maintainer "Achim Gsell <achim.gsell@psi.ch>"
|
|
|
|
module-help "
|
|
XZ Utils is free general-purpose data compression software with a high
|
|
compression ratio. XZ Utils were written for POSIX-like systems, but
|
|
also work on some not-so-POSIX systems. XZ Utils are the successor to
|
|
LZMA Utils.
|
|
|
|
The core of the XZ Utils compression code is based on LZMA SDK, but it
|
|
has been modified quite a lot to be suitable for XZ Utils. The primary
|
|
compression algorithm is currently LZMA2, which is used inside the .xz
|
|
container format. With typical files, XZ Utils create 30 % smaller
|
|
output than gzip and 15 % smaller output than bzip2.
|
|
|
|
XZ Utils consist of several components:
|
|
* liblzma is a compression library with an API similar to that of zlib.
|
|
* xz is a command line tool with syntax similar to that of gzip.
|
|
* xzdec is a decompression-only tool smaller than the full-featured xz
|
|
tool.
|
|
* A set of shell scripts (xzgrep, xzdiff, etc.) have been adapted from
|
|
gzip to ease viewing, grepping, and comparing compressed files.
|
|
* Emulation of command line tools of LZMA Utils eases transition from
|
|
LZMA Utils to XZ Utils.
|
|
|
|
While liblzma has a zlib-like API, liblzma doesn't include any file I/O
|
|
functions. A separate I/O library is planned, which would abstract
|
|
handling of .gz, .bz2, and .xz files with an easy to use API.
|
|
"
|
|
|