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Tip: Use ssh_config or systemd.unit for dotted names.

create a file descriptor for accepting signals

mask; struct signalfd_siginfo fdsi; sigemptyset(&mask); sigaddset(&mask, SIGINT); sigaddset(&mask, SIGQUIT); /* Block signals

create a file descriptor for accepting signals

mask; struct signalfd_siginfo fdsi; sigemptyset(&mask); sigaddset(&mask, SIGINT); sigaddset(&mask, SIGQUIT); /* Block signals

synchronous I/O multiplexing

readfds, writefds, exceptfds; int r; sigemptyset(&sigmask); sigaddset(&sigmask, SIGCHLD); if (sigprocmask(SIG_BLOCK, &sigmask

create a POSIX per-process timer

Blocking signal %d\n", SIG); sigemptyset(&mask); sigaddset(&mask, SIG); if (sigprocmask(SIG_SETMASK, &mask

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