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.

If you install Tor Browser this way, you will be prompted to update it when an updated version is available.
The new signing subkey for the Tor Browser 6.5 release isn't in the hard-coded keys distributed with torbrowser-launcher. If you get a signature verification error when downloading and installing Tor Browser for the first time, this command is required for signature verification to work properly:
gpg --homedir "$HOME/.local/share/torbrowser/gnupg_homedir/" --refresh-keys --keyserver pgp.mit.edu
If torbrowser-launcher was installed before Tor Browser 6.5 was released, the update to Tor Browser 6.5 will be done successfully without any signature verification error.
Update: The signature verification error problem has been corrected in the latest version of Tor Browser 7.0.4.
tar xvfinstead oftar -xvJf– Chai T. Rex Mar 23 '17 at 10:40