# 20.8.2 Signal handling

You can change visualize and change the signal handlers of the target process:

    [0x4A13B8C0]> !signal
    SIGHUP     (DEFAULT)
    SIGINT     (IGNORE)
    SIGQUIT    (DEFAULT)
    SIGILL     (DEFAULT)
    SIGTRAP    (DEFAULT)
    SIGABRT    (DEFAULT)
    SIGFPE     (DEFAULT)
    SIGKILL    (DEFAULT)
    SIGBUS     (DEFAULT)
    SIGSEGV    (DEFAULT)
    SIGSYS     (DEFAULT)
    SIGPIPE    (DEFAULT)
    SIGALRM    (IGNORE)
    SIGTERM    (DEFAULT)
    SIGURG     (DEFAULT)
    SIGSTOP    (DEFAULT)
    SIGTSTP    (DEFAULT)
    SIGCONT    (DEFAULT)
    SIGCHLD    (DEFAULT)
    SIGTTIN    (DEFAULT)
    SIGTTOU    (DEFAULT)
    SIGIO      (DEFAULT)

    [0xB7FA8810]> !sig SIGIO 0x8049350
    Signal 29 handled by 0x08049350
    [0xB7FA8810]> !sig SIGIO
    SIGIO      (0x8049350)
    [0xB7FA8810]> !sig SIGIO 0
    (DEFAULT)
    [0xB7FA8810]> !sig SIGIO
    SIGIO      (DEFAULT)
    [0xB7FA8810]>