PAUSE(3) BSD Programmer's Manual PAUSE(3)
pause - stop until signal
Pause is made obsolete by sigpause(3).
The pause() function forces a process to pause until a signal is received
from either the kill(2) function or an interval timer. (See
setitimer(2).) Upon termination of a signal handler started during a
pause(), the pause() call will return.
Always returns -1.
The pause() function always returns:
[EINTR] The call was interrupted.
kill(2), select(2), sigpause(2)
A pause() syscall appeared in Version 6 AT&T UNIX.
4th Berkeley Distribution June 4, 1993 1