Previously, I erroneously titled my column as "SIGALRM Timers and Stdin Analysis". It turned out that by the time I'd finished writing it, I had spent a lot of time talking about SIGALRM and how to ...

The reason some of those functions work with numbers and some with names is because stdout, stdin, and stderr are macros for the FILE* type that printf() and friends take. dup2 expects a straight ...