Install TOR Browser Bundle 5.5 On Ubuntu / LinuxMint

Tor is a free software and platform independent  that helps you to browse anonymously  in the web through powerful tor network.

It defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security.
The Tor Browser Bundle lets you use Tor on Windows, Mac OS X, or Linux without needing to install any software. It can run off a USB flash drive, comes with a pre-configured web browser to protect your anonymity, and is self-contained.

In this Tutorial I will tell you how to install TOR Browser Bundle 5.5 on Ubuntu 15.10 / 14.04 LTS / 12.04 , LinuxMint 17 / 16 

Full changelog

Updates:

• Firefox to 38.6.0esr
• libevent to 2.0.22-stable
• NoScript to 2.9.0.2
• Torbutton to 1.9.4.3
• Update Tor Launcher to 0.2.7.8

Bugs:

• Show circuit display for connections using multi-party channels
• Avoid empty prompt shown after non-en-US update
• Remove Tor fundraising donation banner
• After update, load local change notes
• Polish about:tor appearance
• Clean up tor-control-port.js
• Move window.name handling into a Firefox patch
• Code cleanup
• Bundle a fixed set of fonts to defend against fingerprinting
• Add new Tor Browser locale (Japanese)
• Remove Flashproxy
• Load a static tab with change notes after an update
• Avoid loop due to optimistic data SOCKS code 
• Isolate SharedWorkers by first-party domain
• After update, load local change notes
• Apply whitelist to local fonts in @font-face
• Shift and Alt keys leak physical keyboard layout
• Map the proper SHIFT characters to the digit keys
• Disable RC4 fallback
• Remove custom updater certificate pinning
• Move window.name handling into a Firefox patch
• Support math symbols in font whitelist
• Include updater and build patches needed for hardened builds
• Update/add new obfs4 bridge
• Change recommended pluggable transport type to obfs4
• Create a new MAR Signing key and bake it into Tor Browser
• Use onion address for DuckDuckGo search engine
• Changelog after update is empty if JS is disabled

Installation Steps

Installation can be done via ppa and also by tar file and there  is no official PPA from Tor team , as of now webupd8 team providing the ppa.

Step 1: Add the PPA Provided by webupd8 Team

sudo add-apt-repository ppa:webupd8team/tor-browser

Step 2: Update the Repository

sudo apt-get update

Step 3: Install TOR Browser Bundle

sudo apt-get install tor-browser