> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/develop/shell/utilities/xz.md).

# 高效压缩工具xz

xz是比gzip更好的压缩工具，目前已经得到新版本tar的集成支持，所以使用非常方便。

* 压缩

```
tar cfJ win10.tar.xz win10.xml win10.qcow2
```

`-J` 参数表示使用xz压缩算法

* 解压缩

```
tar xfJ win10.tar.xz
```

如果是早期tar版本，则采用管道

* 压缩

```
tar cf - directory/ | xz -z - > directory.tar.xz
```

* 解压缩

```
unxz < file.tar.xz > file.tar
xz -dc < file.tar.xz > file.tar
```

## 参考

* [Create a tar.xz in one command](https://stackoverflow.com/questions/18855850/create-a-tar-xz-in-one-command)
* [How do I uncompress a tarball that uses .xz?](https://askubuntu.com/questions/92328/how-do-i-uncompress-a-tarball-that-uses-xz)