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termination. You cannot ignore the "SIGKILL or "SIGSTOP signals at all. You can ignore program error signals like ‘SIGSEG’, but ignoring the error won’t enable the program to continue executing meaningfully. Ignoring user requests such as ‘SIGINT’, ‘SIGQUIT’, and ‘SIGTSTP’ is unfriendly. When you do not wish signals to be delivered during a certain part of the program, the thing to do is to block them, not ignore them. Note Blocking Signals::.