In Ubuntu 13.04 I used the following PPA to install the 64-bit Tor Browser Bundle. However, in Ubuntu 13.10 it doesn't work anymore.

sudo add-apt-repository ppa:upubuntu-com/tor64

sudo apt-get update 

sudo apt-get install tor-browser 

sudo chown $USER -Rv ~/.tor-browser/

How do I install the Tor Browser Bundle in Ubuntu (13.10)?

Note: This PPA hasn't been updated in YEARS already (since 2015) is several updates behind the official Tor Browser Bundle release.

1. 
   

   Run the below commands to install tor browser in Ubuntu 13.10 64-bit version:

   
   
   

   sudo add-apt-repository ppa:upubuntu-com/tor64
   
   sudo gedit /etc/apt/sources.list.d/upubuntu-com-tor64-saucy.list
   
   

   
   


2. 
   

   Change saucy to raring and save that file:

   
   
   

   

   
   


3. 
   

   Update the repositories:

   
   
   

   sudo apt-get update
   
   

   
   


4. 
   

   Now you can install the Tor Browser Bundle:

   
   
   

   sudo apt-get install tor-browser 
   
   

   
   

Do not use the packages in Ubuntu's universe.

According to The Tor Project, "In the past they have not reliably been updated. That means you could be missing stability and security fixes."

Download Tor Browser Bundle from The Tor Project website

• From here, select your Language and download the 32-bit or 64-bit flavor as well as the accompanying sig file to ~/path/to/TBB_directory.

Verify GPG Signature

• 
  

  Download the Tor Browser Developers GPG Public Key (which is used for signing Tor Browser Bundle packages; also see keyserver):

  
  
  

  gpg --keyserver keys.gnupg.net --recv-keys 0xEF6E286DDA85EA2A4BA7DE684E2C6E8793298290
  
  

  
  


• 
  

  Verify that the signature file was produced when their GPG Key signed your Tor Browser Bundle download (adjust the commands if version is not "5.0.1" or language is not "en"):

  
  
  

  cd ~/path/to/TBB_directory 
  
  gpg --verify tor-browser-linux64-5.0.1_en-US.tar.xz.asc tor-browser-linux64-5.0.1_en-US.tar.xz
  
  

  
  


• 
  

  You should see "Good signature.." in your terminal if successful (if not, download the file again and try once more):

  
  
  

  gpg: Signature made Mon 17 Aug 2015 06:48:06 PM UTC
  
  gpg:                using RSA key D40814E0
  
  gpg: Good signature from "Tor Browser Developers (signing key) <torbrowser@torproject.org>"
  
  gpg: WARNING: This key is not certified with a trusted signature!
  
  gpg:          There is no indication that the signature belongs to the owner.
  
  Primary key fingerprint: EF6E 286D DA85 EA2A 4BA7  DE68 4E2C 6E87 9329 8290
  
       Subkey fingerprint: BA1E E421 BBB4 5263 180E  1FC7 2E1A C68E D408 14E0
  
  

  
  

Extract Tor Browser Bundle Package

• 
  

  Right-click .tar.xz file and select "Extract Here" or:

  
  
  

  tar -xvf tor-browser-linux64-5.0.1_en-US.tar.xz
  
  

  
  

Browse The Internet using globally distributed, encrypted, and anonymous Tor network

• 
  

  Open newly extracted directory, find the file start-tor-browser, and make sure it is executable.

  
  
  
  
  
  • Right-click > Properties > Permissions > Execute: Allow executing file as program
  
  
  
  


• 
  

  Double-click start-tor-browser or:

  
  
  

  ./start-tor-browser
  
  

  
  



• Select Run if Nautilus asks you how you want to execute the `start-tor-browser' script.

Congratulations!

Ubuntu 16.04 and later

Tor Browser (torbrowser-launcher) is available in the default Ubuntu repositories in Ubuntu 16.04 and later. torbrowser-launcher handles
downloading the most recent version of Tor Browser Bundle for you, in your language and for your architecture. After installing Tor Browser, it can be launched by searching for tor in the Dash and clicking the Tor Browser icon. The Tor Browser Launcher Settings app is also installed along with Tor Browser.

1. 
   

   Update the gpg key:

   
   
   

   gpg --homedir "$HOME/.local/share/torbrowser/gnupg_homedir/" --refresh-keys --keyserver pgp.mit.edu  
   
   

   
   


2. 
   

   Tor Browser still may not launch after updating the gpg key due to being unable to update the Tor Browser version in:

   
   
   

   /home/your-username/.local/share/torbrowser/tbb/x86_64/tor-browser_en-US/Browser/TorBrowser/Docs/sources/versions

   
   
   

   Replace your-username with your username and replace en-US with your language in the following commands and run these commands:

   
   
   

   cd     
   
   mkdir sources  
   
   cd sources     
   
   touch versions    
   
   gedit /home/your-username/.local/share/torbrowser/tbb/x86_64/tor-browser_en-US/Browser/TorBrowser/Docs/sources/versions
   
   

   
   



3. A Gedit window will open up. Copy the string TORBROWSER_VERSION=7.5 into the Gedit window and save the file.



4. 
   

   Launch Tor Browser for the first time.

   
   
   

   torbrowser-launcher 
   
   

   
   

Now Tor Browser will launch normally by clicking its icon. If an update to Tor Browser is available, the update will be installed as usual.

You can install TorBrowser Bundle in Ubuntu by using the TorBrowser WebUpd8 PPA. Open a terminal and copy/paste the following commands:

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

sudo apt-get update

sudo apt-get install tor-browser

Then simply launch TorBrowser from the Dash / menu.

More info: Tor Browser Bundle Ubuntu PPA