| exit (status) | Built-in Function | 
| quit (status) | Built-in Function | 
| Exit the current Octave session. If the optional integer value status is supplied pass that value to the operating system as the Octave's exit status. | 
| atexit (fcn) | Built-in Function | 
| Register a function to be called when Octave exits.  For example           function print_fortune ()
            printf ("\n%s\n" system ("fortune"));
            fflush (stdout);
          endfunction
          atexit ("print_fortune");
          will print a message when Octave exits. |