Original Source: How To Force Quit on Mac
There is nothing more annoying than a sudden non-responsive application or a program that gets stuck on an error while you are in the middle of some important stuff! But this might interest you that there are six different ways which you can use on your Mac to force end these applications. I bet they will come in handy sooner or later. Here goes:
1. Use the keyboard, use the keys:
A combination of “Command+Option+Shift+Escape” pressed down for a second or two is the fastest way of quitting these applications. Keep it on your fingertips!
2. “Force Quit Applications” Window:
To open this window first you need to press ‘Command+Option+Escape’. Once it appears, select the application you want to close and then of course, hit that ‘Force Quit’ button to end it right away! This is particularly useful when you need to stop more than one application.
3. Straight from the Dock:
If you are really fed up and want the application to just go away then in the Dock, "Option+Right Click" on the apps icon will give you the “Force Quit” option that won’t even ask you for a confirmation before ending it !
4. Use the Apple Menu:
If you keep the ‘Shift key’ pressed down and click on the Apple menu, you will be able to find ‘Force Quit [Application Name]’. However, this might not work if the program in question becomes completely unresponsive. In such cases, the menus cannot be accessed.
5. Bring up the Activity Monitor:
Press ‘Command+Space’ that should make the Spotlight appear. Type Activity Monitor which is just like the ‘Task Manager’ from the Windows family and a more complicated version of the earlier Force Quit window. It looks like the image below:
In it, the unresponsive applications will be shown red. Choose the process name /ID to be closed and click the button that says ‘Quit Process’.
6. Terminal and kill command, the ultimate option:
It is almost never going to fail you. Start the Terminal and give any of these commands:
For instance if you want to end all the Safari applications, you’ll give the command “kill all Safari”.
Or better still, if you can find the process ID by using the ps or ‘ps aux’ command then you can use it to end that specific program:
“kill -9 [pid]”
You must be very careful with these kill commands because you might lose important data permanently because these do not let Window Restore or Auto Save to work before the application is ended by these.
Tip for the Mobile Users:
You can use Force Quit on iOS too. All you have to do is hold the Power button down on your iphone, ipod touch or ipad. When you see the ‘slide to power’ option then hold the ‘Hold’ button till the application you want to end, closes.
How To Force Quit on Mac