linux - /usr/lib/* files had been deleted, how to restore these files -

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i accidently deleted files in /usr/lib/, how resotre files!! os centos 6.6. several command cannot used,such as:yum,rpm. should do, boss kill me~~ help.

step 1: remove disk machine

step 2: add disk machine non-primary disk

step 3: boot other machine, , mount non-primary disk , (if separate) /usr , /usr/lib /mnt/usr/lib

step 4: recover recent backup


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