Assign Shortcut Keys On Ubuntu

First you'll want to load up gconf-editor by typing gconf-editor on terminal or Press ALT F2 and type gconf-editor in run box.










Once in the application, navigate to the following key.
apps -> metacity -> keybinding_commands

Double-click on command_1 and enter in the full path to your script or executable that you are trying to run.

Use Which command to find the location of script or command.














Now navigate to the key "global_keybindings", which is directly above the one we were on.














Here you will want to select run_command_1. Enter in the shortcut key in plain text. For instance, for Alt+T, you'll do T. You could use T or T, or whatever you want to assign to the key