How to enable / disable root user account in ubuntu 16.04 LTS?
54482
Why is there no option to login as root?
130082
How to change root password in ubuntu?
87416
How to create a file system as a non root user?
97145
Disable user shell for security reasons
22069
What is the difference between sudo X and running X as root?
39220
Why shouldn't root be allowed to login via ssh?
111511
How to make /sbin/shutdown, /sbin/reboot etc. require sudo again in 16.04?
52991
How do I run a command as root?
36422
Is first Ubuntu user root?
46501
How do I enable auto-login in Mint 18?
56484
How to run a complete GUI as root?
52627
Change default user for authentication
97567
How do I set persistent environment variables for root?
4227
How do I login as root?
105292
Can user accounts be managed via the command line?
43428
Run script as root at login (no sudoer user, shell session)
51339
Why is it bad to run as root?