 | | The odd thing about signals in UNIX is that, although they're everywhere, their arrival—by its very nature—is always a bit of surprise. (Well, that's a bit of an exaggeration. When we're told that the furniture delivery person will be at our house between 9 a.m. and noon on Tuesday, we're prepared for a knock on the door—maybe at 9:15, maybe at 11:45, maybe even at 1:00, perhaps never. When the knock comes, we're ready with well-rehearsed instructions for the paths the delivery person must follow through our house to the place where the sofa will ultimately be placed. Some types of signals are like that; others are more like our smoke alarm before the furniture delivery person knocked it down.) | |
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