Apply the immutable attribute for file ‘linux’ in the home directory of root.

- create file linux using cat command
[root#] chattr  +i  linux.txt



Create user ‘ty’ and change the password ageing policies for the user 
[root#] useradd ty
[root#] passwd ty
[root#] chage -M 10 ty



Uninstall the ‘gpm’ service and install the same again using RPM. 
[root#] rpm -evh gpm
[root#] rpm -ivh gpm