I don't know the [sudo] user password to install software
19524
How can I determine the sudo password?
135331
I changed /etc/sudoers, and now I can't run as sudo
82
How do I reset a lost administrative password?
14551
How do I remove Ubuntu's password requirement?
49664
How to install program locally without sudo privileges?
149141
What happens if you do sudo passwd without specifying a user?
3716
How do I add myself back as a sudo user?
13760
How do I grant sudo privileges to an existing user?
67038
I can use sudo but I can't use su due to a password Authentication failure, shouldn't both be the same password?
36582
How to run an application using sudo without a password?
9723
How do I install software using the Ubuntu Software Center?
18871
How often is the password asked for sudo commands? Where can I set it up?
142930
What is the default password for Ubuntu 12.04?
47010
How can update-manager update without the root password?
71306
Which user's password does `sudo` asks for?
108911
How can I get root-like permissions so I can download stuff from the software center?
7556
How do I sudo a command in a script without being asked for a password?