After even one ls command in a shell prompt, the
screen can start to look crowded. You can always exit from the terminal
window and open a new one, but here's a quicker way to clean up the screen.
Type the following command:
at the shell prompt. The clear command does just what
it implies: it clears the screen.
Sometimes, you may accidentally open a program file or some other
non-text file in a terminal window. Once you close the file, you could
find that the text you're typing doesn't match with the output on the
monitor.
In such cases, you simply have to type:
to return the window to its default values.
