How do I enable su mode?
Step 1: Go to System -> Administration -> Login window. Step 2: In the Security tab, click on the check box “Allow local system administrator” as shown below. After this change, reboot the system and login directly using root account.
How do I access su?
Many distributions allow you to open it by pressing Ctrl + Alt + T . Type. su – and press ↵ Enter . This will attempt to log you in as “super user.” You can actually use this command to log in as any user on the machine, but when left blank it will attempt to log in as root.
Why does the SU Command not work in Ubuntu?
Ubuntu does not ask for the root password during setup, only a user account password of a user that will have sudo access leaving the root account disabled in Ubuntu. If you want to have this enabled, set a password for the root account that will enable the root account allowing for the su command to work. Hope this helps!
What to do when Su does not change user?
I’d suggest using strace on the su process to see where the process is failing. Should give you LOTS of output to sort through, but something in there should indicate where the problem is occurring. You should check the shell in /etc/passwd, and, without wishing to be patronising, check the output of whoami after running su.
Why does Su user not work on CentOS?
Since you did not specify a –shell or –preserve-environment option, and the user had a shell listed, su executed that shell, which immediately exited. Try, instead, setting a valid shell on the user, or specifying a shell with –shell.
Can you use su in any other emulator?
If you use any other emulator the command works and you become super user. Highly active question. Earn 10 reputation (not counting the association bonus) in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity. Not the answer you’re looking for?