Opening and Using the Terminal Emulation Program on Linux
To open the Terminal Emulation Program in Linux, click on the following
icon in the toolbar: 
Use the following basic Unix commands in the Terminal Emulation Program:
| ls | List - lists the files and directories in the current directory. |
| cd directoryname | Change Directory - changes directory to any directory inside the current directory. Use the ls command to determine which directories are there, and the cd command to get into one of them. |
| cd .. | Change Directory - changes directory to the directory in which the current directory resides-or "moves up" one level. Once you have gotten into a directory, use cd .. to get back out. |
What is the Terminal Emulation Program, anyhow?
The Terminal Emulation Program is simply a window that allows you to
type commands directly to the computer. This is in contrast to using
the graphical interface, which allows you to give commands to the computer
by dragging and dropping, clicking on buttons and menus, etc.