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PAUSE(2) Linux Programmer's Manual PAUSE(2)
pause - wait for signal
The 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.
The pause() function only returns when a signal was caught and the sig-
nal-catching function returned. In this case pause() returns -1, and
errno is set to EINTR.
EINTR a signal was caught and the signal-catching function returned.
SVr4, 4.3BSD, POSIX.1-2001.
kill(2), select(2), signal(2), sigsuspend(2).
Linux 1995-08-31 PAUSE(2)
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