pause(2) -- Linux man page
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, SVID, POSIX, X/OPEN, BSD 4.3
SEE ALSOkill(2), select(2), signal(2)