How to Rescue "/etc/ld.so.cache" corruption

Pre-condiction:
ld.so.cache file corrupted or mistake-configuration of ld.so.conf
or wrong /sbin/ldconfig command ... may lead to booting panic.

How to Rescue it (Ubuntu 12.04 as example)

1. Boot with Ubuntu 12.04 CD-ROM

2. Choose "Rescue Mode" in menu

3. Start shell within "Ubuntu Installer"

4. Try to mount the root file system;
代碼:


$ mount /dev/sda1 /mnt

if it is LVM(DM) mapping, please use
代碼:


$ vgscan                 
  (You will know your LVM group name, say $volgroupname)

$ vgchange -ay $volgroupname
  (Activate the LVM group)

$ mount /dev/$volgroupname/<YOUR_ROOTFS_LVM> /mnt

5. Try to clean /etc/ld.so.cache and edit the /etc/ld.so.conf
代碼:


$ cd /mnt/etc/
$ rm ld.so.cache
$ vi ld.so.conf     (...Do some edit or removal)
$ cd ld.so.conf.d/ (...Do some edit or removal)

6. Reboot twice

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