Hello Linux Geeksters. As you may know, Mozilla Firefox 23 has been released a while ago, with some improvements and new features, including: mixed content blocking for avoiding man-in-the-middle attacks, a social share functionality, improvements brought to the about:memory UI and many others.

In this article I will show you how to install Mozilla Firefox 23 on Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 15 Olivia, Linux Mint 14 Nadia and Linux Mint 13 Maya.
Because it is available in the Official Firefox Beta PPA, installing Mozilla Firefox 23 on Ubuntu and Linux Mint is easy. All you have to do is:
Add the repository to your system:
$ sudo add-apt-repository ppa:mozillateam/firefox-next
Update the local repository index:
$ sudo apt-get update
Install Firefox 23:
$ sudo apt-get install firefox