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Accepted
auino
Asked: 2015-08-07 01:29:19 +0800 CST

How to create a file root user can't delete [duplicate]

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On Linux systems, I have a file I want to preserve from (even accidental) deletion.
How can I create a file even the root user can't delete?
For instance, by trying:

# touch file
# chmod 000 file
# chown <somebody>:<somebody> file
# rm file

root user is able to delete the file (through the last command).

How can I avoid root user to (even temporary) delete the file?

linux

1 Answers

  1. Best Answer

    Set its immutable bit to prevent even root from deleting it:

    chattr +i file
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