Linux root user switching

1, sudo command

myRoot @ ubuntu: ~ $ sudo su

Go enter a password to get root privileges

 

2、sudo  passwd  root

If we want to have root privileges, to switch to the root user via su, then we must first re-set the root password:

@ Ubuntu myroot: ~ $ sudo passwd root 

// this way we can set the password for the root user

 

3, switching to the user

ctrl + d to return to a normal user 
root @ ubuntu: / home / myroot # su - myroot returned to normal users