Unlocking root account Ubuntu 14.04 (Trusty) Ubuntu 16.04 (xenial)

Unlocking root account Ubuntu 14.04 (Trusty) Ubuntu 16.04 (xenial)

By default root account is locked on the system . 

Nobody directly logins to system as root but you can issue sudo to issue commands as root user .

For some applications it is required to have root account unlocked so that files can be saved in certain folders for eg in case of Ambari-server installation ssh public keys (id_rsa.pub) need to be stored as authorized_keys in .ssh directory of root account .

Here is the way to unlock root account .

1) Enable Password for rood user-id

sudo passwd root 

2) Unlock root account

sudo passwd -u root

To test :

Switch to root user  Issue

su - root

pwd   <<---present working director

Hope it helps !!!

Enjoy !!