Source to download: link
1. Open Terminal Ctrl+Alt+T
Download Firefox Developer Edition tar file
$ wget https://download.mozilla.org/?product=firefox-aurora-latest-ssl&os=linux64&lang=en-US
2. Copy tar file to opt
$ sudo cp -rp firefox-35.0a2.en-US.linux-x86_64.tar.bz2
3. Open opt
folder (cd /opt/
) and untar file
$ sudo tar xjf firefox-35.0a2.en-US.linux-x86_64.tar.bz2
4. Delete tar file
$ sudo rm -rf firefox-35.0a2.en-US.linux-x86_64.tar.bz2
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Now create new icon for Firefox Developer Edition browser:
$ sudo chown -R $USER /usr/bin/firefox-dev/
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Open
nano ~/.bashrc
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Go to the end of file and paste this line:
export PATH=/usr/bin/firefox-dev/firefox:$PATH
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The last thing we need to do is to create launcher for Unity.
$ sudo nano /usr/share/applications/FirefoxDeveloperEdition.desktop
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Paste the lines below into it:
[Desktop Entry] Version=1.0 Name=Firefox Developer Edition GenericName=Web Browser Exec=/usr/bin/firefox-dev/firefox Terminal=false Icon=/usr/bin/firefox-dev/browser/chrome/icons/default/default128.png Type=Application Categories=Network;WebBrowser;Favorites; MimeType=text/html;text/xml;application/xhtml_xml;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp; X-Ayatana-Desktop-Shortcuts=NewWindow;NewIncognito
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Copy icon to Desktop
$ cp -rp /usr/share/applications/FirefoxDeveloperEdition.desktop /home/$USER/Desktop
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Do run enable
$ chmod +x /home/$USER/Desktop/FirefoxDeveloperEdition.desktop
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Go Desktop and click Firefox Developer Edition 🏁