服务器评测
今天拿到一个包，后缀名为：xz
经查询，用xz-utils中的xz命令可以对其进行解压。
在Ubuntu-11.04下面进行如下操作：
# aptitude search xz
得如下结果：
p xz-lzma – XZ-format compression utilities – compatibility commands
p xz-utils – XZ-format compression utilities
p xzdec – XZ-format compression utilities – tiny decompressors
p xzgv – Picture viewer for X with a thumbnail-based selector
p xzip – Interpreter of Infocom-format story-files
p xzoom – magnify part of X display, with real-time updates
于是安装xz-utils
# sudo apt-get install xz-utils
完成后，查看帮助：
# xz –help
Usage: xz [OPTION]… [FILE]…
Compress or decompress FILEs in the .xz format.
-z, –compress force compression
-d, –decompress force decompression
-t, –test test compressed file integrity
-l, –list list information about .xz files
-k, –keep keep (don’t delete) input files
-f, –force force overwrite of output file and (de)compress links
-c, –stdout write to standard output and don’t delete input files
-0 … -9 compression preset; default is 6; take compressor *and*
decompressor memory usage into account before using 7-9!
-e, –extreme try to improve compression ratio by using more CPU time;
does not affect decompressor memory requirements
-q, –quiet suppress warnings; specify twice to suppress errors too
-v, –verbose be verbose; specify twice for even more verbose
-h, –help display this short help and exit
-H, –long-help display the long help (lists also the advanced options)
-V, –version display the version number and exit
With no FILE, or when FILE is -, read standard input.
Report bugs to <lasse.collin@tukaani.org> (in English or Finnish).
XZ Utils home page: <http://tukaani.org/xz/>
最后根据帮助信息解压此文件。
更多Ubuntu相关信息见Ubuntu 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=2
