immutable files

To set

[root@tecmint tecmint]# chattr +i demo/
[root@tecmint tecmint]# chattr +i important_file.conf

To check

lsattr

OUTPUT

----i----------- ./demo
----i----------- ./important_file.conf

To unset

chattr -i demo/ important_file.conf

5 'chattr' Commands to Make Important Files IMMUTABLE (Unchangeable) in Linux5 ‘chattr’ Commands to Make Important Files IMMUTABLE (Unchangeable) in Linux