Step-by-step – Firefox Nightly Installation in Ubuntu 20.04

Installing

2. 2. Downloading Firefox Nightly

   Download Latest Firefox Nightly for Linux

   Firefox Nightly Linux tar.bz2

   Firefox Nightly Linux

3. 3. Extracting Firefox Nightly

   Then Extract Firefox Nightly archive
   Double-Click/Right-Click on File Manager:

   
   Decompress Into /tmp.

4. 4. Installing Firefox Nightly

   Relocate Firefox Nightly
   First, Make a Firefox Directory:

   sudo mkdir /opt/firefox

   If Got “User is Not in Sudoers file” then Look: Solution
   
   Set up Ownership and then Switch Firfox into the target Directory with:

   sudo chown -R root:root /tmp/firefox && sudo mv /tmp/firefox /opt/firefox/firefox-nightly

   Finally, Make a Symlink for Easy-Starting:

   sudo ln -s /opt/firefox/firefox-nightly/firefox /usr/local/bin/firefox-nightly