Ubuntu – How to change repository mirror from commandline

Just because Ubuntu comes with apt does not mean that you can't use yum or pacman or whatever. However, that does not mean it's a good idea!

While it will work, it opens up a huge can of worms with package dependencies and similar -- yum and apt will not necessarily co-operate with each other, and might even fight over dependency libraries and the like, leading to your system possibly becoming a big heaping pile of broken packages and inconsistency. If you do this, it (first off) might not even work, and/or you run the risk of totally destroying your system.

Unless you know exactly what you're doing, and you're careful, installing and using yum as a package manager might end up with some very strange results. If you need to install a RPM package for whatever reason, it's best to use alien or a similar utility. Typically, though, using Alien is not necessary. Instead, most unavailable packages on Ubuntu can (typically) be found through PPAs, but be careful and only add PPAs from trusted sources/people.