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Default in most terminal you can press ctrl\ to send a SIGQUIT signal to the process.

However on my keyboard to type a backslash, you have to do it like this: altshift7

Doing ctrlaltshift7 doesn't work, so how should I do the keyboard shortcut?

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Can you not rebind the shortcut to be something you can type simply? – Xyon Nov 15 '12 at 12:49
    
What keyboard is that? – week Nov 15 '12 at 12:53
    
@week Danish OSX keyboard. – Tyilo Nov 15 '12 at 13:48

I don’t know how you can type Ctrl\, but I can give you an alternative way to generate SIGQUIT from the keyboard.  Find a character that you can type as a simple key combination.  This may need to map to an ASCII character; e.g., CtrlA.  Then type

stty quit ^A

That can be either sttyquitCtrlA Enter (if you get an error message, try typing CtrlV before the CtrlA) or literally sttyquit^A Enter (if you get an error message, try putting the ^A in quotes).  Then type a command like sleep 9, press your key combination (CtrlA), and see whether the program quits as you would expect for Ctrl\.

If you find a combination that works, put it (the stty quit command) into your .login, .profile, .bashrc, or whatever initialization command file you use.

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Edit: Since the previous recommendation didn't work, have you tried mapping a different key to ^\?

For instance (in OSX terminal): Go to Terminal->Preferences->Settings->Keyboard, click the + and map something like CTRL+F4 to \034.

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<kbd>ctrl</kbd><kbd>4</kbd> just results in the 4 being typed. – Tyilo Nov 15 '12 at 13:49
    
kbd tag doesn't work in the comments. use the backquote instead. Ctrl + 4 – pratnala Nov 15 '12 at 17:04

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