[ubuntu][privilege] How to change user privilege

[ubuntu][privilege] How to change user privilege

vim /etc/passwd



root:x:0:0:root:/root:/bin/bash

daemon:x:1:1:daemon:/usr/sbin:/bin/sh

freeman:x:1000:1000:freeman,,,:/home/freeman:/bin/bash

tftp:x:115:123:tftp daemon,,,:/var/lib/tftpboot:/bin/false

After change

root:x:0:0:root:/root:/bin/bash

daemon:x:1:1:daemon:/usr/sbin:/bin/sh

freeman:x:0:0:freeman,,,:/home/freeman:/bin/bash

tftp:x:115:123:tftp daemon,,,:/var/lib/tftpboot:/bin/false



Reference :

• 
  Can I create another root user account in Linux / UNIX?