针对Linux下的EXT文件系统来说，常用的误删恢复工具有debugfs、ext3grep、extundelete等等。extundelete是一个开源的数据恢复工具，支持ext3、ext4文件系统，其官方站点位于
，目前最新稳定版本为0.2.0。
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系统环境：
RHEL 6.2 [2.6.32-220.el6.i686]
软件环境：
e2fsprogs-devel-1.41.12-11.el6.i686
extundelete-0.2.0.tar.bz2
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一、安装extundelete
1. 安装依赖包
[root@localhost ~]# yum -y install e2fsprogs e2fsprogs-devel
2. 配置、编译及安装
[root@localhost ~]# tar jxf extundelete-0.2.0.tar.bz2
[root@localhost ~]# cd extundelete-0.2.0/
[root@localhost extundelete-0.2.0]# ./configure
[root@localhost extundelete-0.2.0]# make && make install
二、执行各种恢复操作
1. 准备测试环境（挂载指定分区，删除部分文件）
[root@localhost ~]# mkdir /media/recdisk
[root@localhost ~]# mount /dev/sdb7 /media/recdisk/
[root@localhost ~]# ls -R /media/recdisk/
/media/recdisk/:
file1.txt lost+found testdir
/media/recdisk/lost+found:
/media/recdisk/testdir:
httpd.conf
[root@localhost ~]# rm -rf /media/recdisk/*
[root@localhost ~]# umount /dev/sdb7
2. 恢复所有已删除的文件、文件夹
[root@localhost ~]# extundelete /dev/sdb7 --restore-all
.. ..
Writing output to directory RECOVERED_FILES/
Searching for recoverable inodes in directory / ...
3 recoverable inodes found.
Looking through the directory structure for deleted files ...
Restored inode 12 to file RECOVERED_FILES/file1.txt
Failed to restore inode 2017 to file RECOVERED_FILES/testdir:Inode does not correspond to a regular file.
Restored inode 13 to file RECOVERED_FILES/testdir/httpd.conf
0 recoverable inodes still lost.
[root@localhost ~]# ls -R RECOVERED_FILES/ //检查恢复结果
RECOVERED_FILES/:
file1.txt testdir
RECOVERED_FILES/testdir:
httpd.conf
3. 只恢复指定的某个文件、文件夹
[root@localhost ~]# extundelete /dev/sdb7 --restore-file /file1.txt
.. ..
Writing output to directory RECOVERED_FILES/
Restored inode 12 to file RECOVERED_FILES/file1.txt
[root@localhost ~]# extundelete /dev/sdb7 --restore-directory /testdir
.. ..
3 recoverable inodes found.
Looking through the directory structure for deleted files ...
Restored inode 13 to file RECOVERED_FILES/testdir/httpd.conf
2 recoverable inodes still lost.
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