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### 1.1 Running Octave

On most systems, the way to invoke Octave is with the shell command ``octave`'. Octave displays an initial message and then a prompt indicating it is ready to accept input. You can begin typing Octave commands immediately afterward.

If you get into trouble, you can usually interrupt Octave by typing `Control-C` (usually written `C-c` for short). `C-c` gets its name from the fact that you type it by holding down <CTRL> and then pressing <c>. Doing this will normally return you to Octave's prompt.

To exit Octave, type `quit`, or `exit` at the Octave prompt.

On systems that support job control, you can suspend Octave by sending it a `SIGTSTP` signal, usually by typing `C-z`.