chattr is a command that allows a user to set certain attributes on a file residing on a Linux filesystem. A “+i” flag adds an immutable attribute to the file. When this is enabled, even a root user cannot change the file. Similarly, a “-i” flag subtracts the specific attribute from the file.
If you have a folder of files that you want to lock up, you can also add the “
+R” flag. For example:
Note: Only the superuser or a process pessessing the CAP_LINUX_IMMUTABLE capability can set or clear this attribute.
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