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I tried to install the packages 'apt-file' 'ubuntu tweak' and 'checkinstall' using the sudo apt-get install command in 10.10 ,but terminal reported 'package not found' even after sudo apt-get update. What am i doing wrong? I really those packages as i'm yet to compile a single source. Please help a newbie UBUNTU ROCKS!

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up vote 1 down vote accepted

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:

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

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I enabled the universe and multiverse repository sources and it works thanks a lot – Mysterio Apr 3 '11 at 18:34

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

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i had the deb file from the site you cited but how do i add PPA to stay updated? sudo apt-get update got me ubuntu tweak in the software centre. – Mysterio Apr 3 '11 at 20:44

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