How to Install Mozilla Firefox 39.0 (Stable) on Ubuntu or Linux Mint via PPA


Firefox 39.0 (Stable)  is released, How to Install Mozilla on Ubuntu 15.04 vivid Vervet, ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr (LTS)or  Linux Mint 17.2 "Rafaela", Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana via PPA

The Mozilla Firefox project is a redesign of Mozilla's browser component, written using the XUL user interface language and designed to be cross-platform, supporting Linux, Android, Microsoft Windows and Mac OS X operating systems. It is a fast, small and very easy-to-use web browser/navigator/explorer that offers many advantages over other similar products, such as the ability to block pop-up windows and the feature-rich tabbed browsing experience.

Features at a glance

The application offers a well designed graphical user interface that integrates search (powered by Google, Bing, Yahoo, etc.), and industry leading accessibility with Find As You Type - find links and page text by simply typing. As mentioned before, the Firefox browser features comprehensive pop-up controls, which will keep unwanted advertising off your desktop. A tab browsing mode will let you open several pages in a single window, allowing you to load links in the background without leaving the page you're on.

What New in Mozilla Firefox 39.0:

  • Share Hello URLs with social networks
  • Project Silk: Smoother animation and scrolling (Mac OS X)
  • Support for 'switch' role in ARIA 1.1 (web accessibility)
  • SafeBrowsing malware detection lookups enabled for downloads (Mac OS X and Linux)
  • Support for new Unicode 8.0 skin tone emoji
  • Removed support for insecure SSLv3 for network communications
  • Disable use of RC4 except for temporarily whitelisted hosts
  • The malware detection service for downloads now covers common Mac file types (Bug 1138721)
  • Performance of displaying dashed lines is improved (Mac OS X) (Bug 1123019)
  • List-style-type now accepts a string value
  • Enable the Fetch API for network requests from dedicated, shared and service workers
  • Cascading of CSS transitions and animations now matches the current spec
  • Implement allowing anticipation of a future connection without revealing any information
  • Added support for CSS Scroll Snap Points
  • Drag and drop enabled for nodes in Inspector markup view
  • Webconsole input history persists even after closing the toolbox
  • Cubic bezier tooltip now shows a gallery of timing-function presets for use with CSS animations
  • localhost is now available offline for WebSocket connections
  • Improve performance for IPv6 fallback to IPv4
  • Fix incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers
  • The Security state indicator on a page now correctly ignores loads caused by previous pages
  • Fixed an issue where a Hello conversation window would sometimes fail to open
  • A regression that could lead to Flash not displaying has been fixed
  • Update to NSS 3.19.2
  • Various security fixes

How to Install Mozilla Firefox 39.0 (Stable) on Ubuntu or Linux Mint via PPA

To Install/Update Mozilla Firefox 39.0 on Ubuntu 15.04 vivid Vervet, ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr (LTS), Ubuntu 13.10/13.04/12.04, Linux Mint 17.2 "Rafaela", Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana, Linux Mint 13 Maya, Pinguy OS 14.04, Elementary OS 0.3 Freya, Elementary OS 0.2 Luna, Peppermint Five, Deepin 2014, LXLE 14.04, Linux Lite 2.0, Linux Lite 2.2 and other Ubuntu derivative systems via PPA, open a new Terminal window and bash (get it?) in the following commands:
sudo add-apt-repository ppa:ubuntu-mozilla-security/ppa
sudo apt-get update
sudo apt-get install firefox
to Uninstall, do :
sudo apt-get remove firefox
Enjoy! I hope this article adding you more clarity.