一：環境搭建

1.下載http://extundelete.sourceforge.net/
2.安裝e2fsprogs和e2fsprogs-libs

yum install e2fsprogs e2fsprogs-libs -y

3.上傳文件至linux主機

put C:/Users/CPIC/Desktop/extundelete-0.2.4.tar.bz2

4.安裝軟件

tar jxvf extundelete-0.2.4.tar.bz2
cd /root/extundelete-0.2.4
./configure
make & make install

報錯：
（1）configure: error: in `/root/Desktop/extundelete-0.2.4‘:
     configure: error: C++ compiler cannot create executables
 解決：yum install gcc*  -y
 
（2）Configuring extundelete 0.2.4
     configure: error: Can‘t find ext2fs library
解決：yum install e2fsprogs* -y

二：實驗

mkdir /shiyan   #創建掛載目錄
fdisk /dev/sdb  #劃分為一個主分區 
   n-p-1-w
mount /dev/sdb1 /shiyan    #掛載
cp -a /etc/passwd /shiyan/  #復制文件
cd /shiyan
rm -rf passwd            #刪除文件
umount /shiyan            #卸載文件系統
[root@node1 /]# extundelete /dev/sdb1 --inode 2      #查看inode信息，重要！！
NOTICE: Extended attributes are not restored.
Loading filesystem metadata ... 8 groups loaded.
Group: 0
Contents of inode 2:
0000 | ed 41 00 00 00 10 00 00 7c 8f ed 59 77 8f ed 59 | .A......|..Yw..Y
0010 | 77 8f ed 59 00 00 00 00 00 00 02 00 08 00 00 00 | w..Y............
0020 | 00 00 00 00 03 00 00 00 49 00 00 00 00 00 00 00 | ........I.......
0030 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0040 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0050 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0060 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0070 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
0080 | 1c 00 00 00 00 19 23 02 00 19 23 02 dc ff 9c b1 | ......#...#.....
0090 | 33 8f ed 59 00 00 00 00 00 00 00 00 00 00 00 00 | 3..Y............
00a0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00b0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00c0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00d0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00e0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
00f0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 | ................
Inode is Allocated
File mode: 16877
Low 16 bits of Owner Uid: 0
Size in bytes: 4096
Access time: 1508740988
Creation time: 1508740983
Modification time: 1508740983
Deletion Time: 0
Low 16 bits of Group Id: 0
Links count: 2
Blocks count: 8
File flags: 0
File version (for NFS): 0
File ACL: 0
Directory ACL: 0
Fragment address: 0
Direct blocks: 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
Indirect block: 0
Double indirect block: 0
Triple indirect block: 0
File name                                       | Inode number | Deleted status
.                                                 2
..                                                2
lost+found                                        11             Deleted
passwd                                            12             Deleted

恢復單個文件：extundelete /dev/sdb1 --restore-file 原來文件存儲的相對路徑
原來文件的存儲路徑為/data/passwd ,那麽參數後面直接指定passwd；如果原來的文件路徑為/data/test/passwd,那麽參數後面test/passwd.

恢復單個目錄：extundelete /dev/sdb1 --restore-directory /aaa
原來存儲目錄路徑為： /data/aaa

恢復所有刪除的數據：extundelete /dev/sdb1 --restore-all

最後在當前目錄下的RECOVERED_FILES目錄中找到誤刪的文件。

本文出自 “獨上高樓,望盡天涯路” 博客，請務必保留此出處http://nxyboy.blog.51cto.com/10511646/1975244

linux系統誤刪文件怎麽辦！使用extundelete恢復數據