linux 修复模式卸载,删除Linux的依赖库并进入救援模式恢复

心已赠人 2023-01-21 11:18 8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

![4e613775456dbbcaee656adafc573428.png][]

1、Troubleshooting

![c02c3b921b96fb48126a9bc39b6401dc.png][]

2、Recure a CentOS system(救援模式)

![c127975b4f239c784b770d1c211975b0.png][]

3、输入1,回车

![4b274f24d6286f5facb1326bbd7fd539.png][]

4、提示系统被挂载到了/mnt/sysimage，按下回车

![66030a5ae2c1afa605b824f09f98a18a.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

![8a71469880f34714fbb152d3e561c64d.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

[4e613775456dbbcaee656adafc573428.png]: /images/20221020/04b483b90842495183f9f12b8ad5f784.png
[c02c3b921b96fb48126a9bc39b6401dc.png]: /images/20221020/f817653bcfea4ecfbfe21d4d6f7dd384.png
[c127975b4f239c784b770d1c211975b0.png]: /images/20221020/118360f64b874ca2afd516a200cdc455.png
[4b274f24d6286f5facb1326bbd7fd539.png]: /images/20221020/c8acdb0d69c64964b72d1067e65eb292.png
[66030a5ae2c1afa605b824f09f98a18a.png]: /images/20221020/115479f04317440f86eaaeb806eb1bc4.png
[8a71469880f34714fbb152d3e561c64d.png]: /images/20221020/31f77df1bb1d4c7daa120014238c3c4d.png