https://ftp.mozilla.org/pub/firefox/releases/
1.sudo gedit /usr/share/applications/firefox.desktop
2.設置桌面快捷鍵
Exec=執行文件目錄地址
Icon=圖標地址
[Desktop Entry]
Name=firefox
Comment=firefox
Exec=/opt/firefox/firefox
Icon=/opt/firefox/browser/icons/mozicon128.png
Terminal=false
Type=Application
Categories=Application;
Encoding=UTF-8
StartupNotify=true