- [How To] Fix The Google GPG Error on Ubuntu - OMG! Ubuntu!
- Download elementary OS
- How can I check the available version of a package in the repositories?
- Mirroring an Apt Repository
- How to make a package manager wait if another instance of APT is running?
- How to check the version before install packages using apt-get
- Install oracle-java7-installer through apt-cacher-ng - Ask Ubuntu
- repository - How can I get apt to use a mirror close to me, or choose a faster mirror? - Ask Ubuntu