изучить и изменить сигнальное действие (examine and change a signal action)
Смотри также (See also)
Section 2.4, Signal Concepts, exec(1p), _Exit(3p), kill(3p),
_longjmp(3p), longjmp(3p), pthread_sigmask(3p), raise(3p),
semget(3p), sem_init(3p), sem_open(3p), sigaddset(3p),
sigaltstack(3p), sigdelset(3p), sigemptyset(3p), sigfillset(3p),
sigismember(3p), signal(3p), sigsuspend(3p), wait(3p), waitid(3p)
The Base Definitions volume of POSIX.1‐2017, signal.h(0p)
