Tech New :Opening a Terminal using a Keyboard Shortcut for Ubuntu 12.04/Ubuntu 12.10

Opening a Terminal using a Keyboard Shortcut
This is the default keyboard shortcut for Ubuntu 12.04 (and probably
previous Ubuntu releases) running the GNOME / Unity desktop, unless
you (or someone else) has changed it, it should work.

This also the default keyboard shortcut if you have changed your
desktop environment to GNOME Shell, LXDE, or the Lubuntu Desktop and
will work unless you (or someone else) has changed it.

This will NOT work for the XFCE or Xubuntu Desktop unless you (or
someone else) has added the keyboard shortcut.

1) Press Ctrl + Alt + T to open a terminal / command line / shell.

NOTE: pressing Ctrl + Alt + T means: simultaneously hold down the Ctrl
key and Alt key, then press the T key as though you intend to type it.

DO NOT press the Shift key because Ctrl + Alt + Shift + T is different
from Ctrl + Alt + T.

It does NOT matter if your Caps Lock is on or off.

source

http://complete-concrete-concise.com/ubuntu-2/ubuntu-12-04/ubuntu-12-04-how-to-get-a-command-line-shell-or-terminal