"sudo apt-key add -" has no effect
7631
Force update from unsigned repository
136771
Why is sudoers NOPASSWD option not working?
95130
Why running command as sudo returns command not found?
83924
error while trying to sudo apt-get update GPG, no sign repository
124795
sudo does not ask for password
18926
Type 'sudo' is not known in source list
103069
How to fix 'sudo: no tty present and no askpass program specified' error?
132149
How do I run terminal in sudo mode?
45541
How to fix sudo after "chmod -R 777 /usr/bin"?
80899
"no public key available" on apt-get update
54429
Why can't I sudo some commands? (e.g., vim)
94228
What commands (exactly) should replace the deprecated apt-key?
49664
How to install program locally without sudo privileges?
69960
What is sudo apt-get -f install?
7317
how to: Please sudo, do _not_ setup any environment, especially $SUDO_USER?
47119
Sudo comes up with an error, cannot run anything as root
103004
What environment do I get with sudo?