删除Linux的依赖库并进入救援模式恢复

小鱼儿 2021-10-23 17:40 196阅读 0赞

# 删除Linux的依赖库并进入救援模式恢复 #

> 模拟一下依赖库文件被删，并进入救援模式恢复
> 
> 系统：CentOS7

## 一、删除mv的依赖库文件 ##

**删除**/lib64/libc.so.6

[root@centos7 Packages]# which mv
    alias mv='mv -i'
        /usr/bin/mv
    [root@centos7 Packages]# ldd /usr/bin/mv
        linux-vdso.so.1 =>  (0x00007ffd51946000)
        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f40c2bd9000)
        libacl.so.1 => /lib64/libacl.so.1 (0x00007f40c29d0000)
        libattr.so.1 => /lib64/libattr.so.1 (0x00007f40c27cb000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f40c23fe000)
        libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f40c219c000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f40c1f98000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f40c2e00000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f40c1d7c000)
    [root@centos7 Packages]# rm -f /lib64/libc.so.6

**删除后mv等很多命令变无法使用**

[root@centos7 Packages]# mv /etc/fstab .
    mv: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
    [root@centos7 Packages]# cp /etc/fstab .
    cp: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
    [root@centos7 Packages]# poweroff
    poweroff: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory

## 二、强制关机，从光盘引导 ##

### 0、进BIOS从光盘引导 ###

![8785d5c8d23438a51a2dad03f8d0f386.png][]

### 1、Troubleshooting ###

![f7d7a83a8b8359cb968d4612c159ea4d.png][]

### 2、Recure a CentOS system（救援模式） ###

![b2c9528844b3e530549721ab0d863aa6.png][]

### 3、输入1,回车 ###

![8d3fc53aca1fff3c6f687c89920453a8.png][]

### 4、提示系统被挂载到了/mnt/sysimage，按下回车 ###

![9d4d3cd161ce5ee027cb809fcf8c6983.png][]

### 5、把光盘的库文件复制过来 ###

使用cp复制库文件到/mnt/sysimage/lib64/;**千万别mv，否则光盘的系统又坏了**

![1670222eb871bb9c83ddf62043ffd1b9.png][]

## 三、重启后的系统已经正常使用 ##

[root@centos7 ~]# cp /etc/fstab . -a
    cp: overwrite ‘./fstab’? y
    [root@centos7 ~]# mv fstab /tmp

转载于:https://www.cnblogs.com/uscWIFI/p/11293733.html

[8785d5c8d23438a51a2dad03f8d0f386.png]: https://s1.51cto.com/images/blog/201908/02/8785d5c8d23438a51a2dad03f8d0f386.png
[f7d7a83a8b8359cb968d4612c159ea4d.png]: https://s1.51cto.com/images/blog/201908/02/f7d7a83a8b8359cb968d4612c159ea4d.png
[b2c9528844b3e530549721ab0d863aa6.png]: https://s1.51cto.com/images/blog/201908/02/b2c9528844b3e530549721ab0d863aa6.png
[8d3fc53aca1fff3c6f687c89920453a8.png]: https://s1.51cto.com/images/blog/201908/02/8d3fc53aca1fff3c6f687c89920453a8.png
[9d4d3cd161ce5ee027cb809fcf8c6983.png]: https://s1.51cto.com/images/blog/201908/02/9d4d3cd161ce5ee027cb809fcf8c6983.png
[1670222eb871bb9c83ddf62043ffd1b9.png]: https://s1.51cto.com/images/blog/201908/02/1670222eb871bb9c83ddf62043ffd1b9.png