i recently purchased my first mac and im still having some difficulty making the transition from windows. im trying to customize my dock and from what i know, to see a change you have to restart the dock. since osx doesnt have a "task manager" like windows, the only way i can think of ending the process is either by restarting or using a command in terminal. i did a bit of reading and it seems like the killall command should fit the bill. However, when i type killall dock into terminal, it tells me "No matching processes belonging to you were found". what am i doing wrong? thanks a bunch.