(8)——文件查找与文件管理2

最后更新于:2022-04-01 14:44:25

## 四、压缩 gzip, gunzip Linux标准压缩工具 对文本文件可以达到75%的压缩率 ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb1d2657.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb1e494f.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb201d9a.jpg) compress, uncompress 旧的Unix压缩工具 bzip2, bunzip2 更新的Linux压缩工具 比gzip有着更高的压缩率 ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb214d35.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb22661c.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb237449.jpg) ## 五、打包(tar) 用于在磁带机、软盘、ZIP设备上做备份。也可以备份在一个硬盘文件上。(并不提供压缩功能) 主要参数: c :将文件备份出来 v :将过程输出 f :打包后改变文件名 t :列出tar包中的内容 x :从一个文件中解出备份 z :使用gzip工具压缩 j :使用bz2工具进行压缩 C :改变打包后文件路径 ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb24931c.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb25cd29.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb25cd29.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb274cbe.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb29e9f6.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb2b194b.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb2c5da9.jpg) ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-06-14_575f8bb2d8eb5.jpg) ## 六、备份与还原文件系统(dump / restore) 备份与还原ext2/3文件系统 不可以在其他文件系统上使用 可以选择进行完全备份或增量备份 dump -0u -f  /var/tmp/hda2dump  /dev/hda1    :将/dev/hda1备份到 /var/tmp/hda2dump文件中 0 :代表完全备份 u :将备份记录写入 /etc/dumpdates  (备份分区顶层目录才可以使用该参数) f :指定备份到文件的路径 restore -rf  /var/tmp/hda2dump :将备份文件还原 r :还原备份文件 t :列出备份文件里面的内容 f :指定备份文件
';