Can't install apt-file and ubuntu tweak in terminal

Question

I tried to install the packages apt-file, ubuntu-tweak and checkinstall using sudo apt-get install <package name> in 10.10, but the terminal reported package not found even after sudo apt-get update. What am I doing wrong?

Answer 1

The problem is most likely that you don't have the universe or multiverse repositories enabled - not all software is in the core ubuntu distribution. Luckily, it's simple to enable those from the system menu:

https://help.ubuntu.com/community/Repositories/Ubuntu

Additionally, even though those are command line programs, you can install them from the ubuntu software center or another graphical package manager.

Answer 2

If I'm not mistaken ubuntu-tweak is in it's own repository -- at least it always was. You can download the deb at http://ubuntu-tweak.com/ and then using ubuntu-tweak add it's PPA to insure it stays updated.