In any *NIX system, after saving a script named "script_name," you need to make it executable so that you can run it. Which command will accomplish this task from the command line?

Facial expressions and gestures are examples of messages.

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.

In your pest busters game, how does player 2 move the ship 2 object? a pressing the w and s keys b. pressing the up arrow and down arrow keys c. moving the mouse from side to side d. moving the mouse up and down select the best answer from the choices provided