However, if you write almost exclusively in English, this same window can be quite bothersome, forcing you to press a letter every time if you want to enter it repeatedly. This window can be extremely helpful in those cases, allowing you to just choose the accent you need. If you happen to use your Mac to type in more than one language, you might have noticed that in most places where you can enter text (on both Lion and Mountain Lion) if you press and hold down a letter while typing, an accent window will pop-up. Ready now? Then let’s start! Disable Pop-up Accent Windows on Lion/Mountain Lion

So yes, a bit of geekery is needed to use this tool.

The power the Terminal app has over your Mac is huge to say the least, and you could end up damaging your Mac seriously if you don’t take care. Needless to say, if you are not familiar with Terminal and are not sure what you are doing, you should just drop it entirely. You may also do a quick search on Spotlight for it to open it up. It comes pre-installed with all Macs and can be found in the Utilities folder located within the Applications folder. The Terminal app is a command-based emulator that is able to control the underlying UNIX-based operating system of Mac OS. This time, we put this extremely helpful utility to use to show you a few simple, yet useful tweaks that will make your Mac experience even better.

Cool mac terminal commands