Filename completion:

In the terminal window (Ctrl - Shift - x), rather than type in a very long file name (or full path name to a file), you can get the shell (the '$') to complete the filename for you.

You do this by typing the first few characters of the file and then clicking the tab button on the screen.

For example, start up the shell window. You will see the prompt :

~ $

to list the files type

ls

you get

~ $ ls
MyDocs
~ $

lets say you want to change director to 'MyDocs'

type:

~ $ cd M

then hit the Tab button on the X Terminal screen and you will see
that the shell completes the filename for you. This results with:

~ $ cd MyDocs/

This comes in very handy if you have very long pathnames.