How to Get a Quake-style Drop-down Terminal in Linux

How to Launch Xfce4 Terminal in Quake-style Drop-down Mode

1. Open xfce4-setting-manager from Application menu or Alt+F2 Application Finder box.
2. Click on the Keyboard icon under Hardware section.
3. Under Application Shortcuts tab, click on the Add button and type in the command box xfce4-terminal --drop-down.