PAUSESection: Linux Programmer's Manual (2)
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NAMEpause - wait for signal
DESCRIPTIONThe pause() library function causes the invoking process (or thread) to sleep until a signal is received that either terminates it or causes it to call a signal-catching function.
RETURN VALUEThe pause() function only returns when a signal was caught and the signal-catching function returned. In this case pause() returns -1, and errno is set to EINTR.
- a signal was caught and the signal-catching function returned.
CONFORMING TOSVr4, 4.3BSD, POSIX.1-2001.
SEE ALSOkill(2), select(2), signal(2), sigsuspend(2)