signal SIGINTare both ways of sending an interrupt signal.
Alternatively, if signal is zero, continue execution without
giving a signal. This is useful when your program stopped on account of
a signal and would ordinarily see the signal when resumed with the
continue command; ‘signal 0’ causes it to resume without a
signal does not repeat when you press <RET> a second time
after executing the command.
signal command is not the same as invoking the
kill utility from the shell. Sending a signal with
causes gdb to decide what to do with the signal depending on
the signal handling tables (see Signals). The
passes the signal directly to your program.