It would be the right thing to say that I messed up!
Accidentally, I changed the owner of all files in /usr/bin to 'dev' from 'root'. Now, sudo does not work! If I use sudo with any command, I get -
sudo: effective uid is not 0, is sudo installed setuid root?
I cannot use
chown command to change the owner back to 'root'. This is a major set back!
Because this is a Virtual Machine, I cannot access the Recovery Console. Infact, even the
reboot command needs the user to have 'root' access.
Experts, please help me in getting control of the OS without having to re-image.
P.S - Possibly a duplicate but reposting as his solution was to start afresh.
More info -
su - root always says incorrect password. Unfortunately, the owner of
su is also 'dev'.
I am able to create a new user using the GUI. It accepted the root password. How do I grant the new user with root access without using visudo.