Linux lock important Files change important commands

Lock important files as follows:

Chattr +i/etc/passwd/etc/shadow/etc/groupp/etc/gshadow

Unlocking files

Chattr-i/etc/passwd/etc/shadow/etc/groupp/etc/gshadow

Note: The I representative here may not change this file arbitrarily

To see if a file is locked

LSATTR/ETC/PASSWD can see it.

To change a command:

For example, you can change the chattr above Xxar

Mv/usr/bin/chattr/usr/bin/xxar

You can use Xxar +i to lock files later.

Another change su This command is also a good idea, way to power.

Mv/usr/bin/su/usr/bin HC

Later in the system to switch users with the HC user name, you can.

HC-Switch to root account

Linux lock important Files change important commands