pause(2) pause(2)
pause - suspend process until signal
#include <unistd.h>
int pause(void);
pause suspends the calling process until it receives a signal. The
signal must be one that is not currently set to be ignored by the calling
process.
If the signal causes termination of the calling process, pause does not
return.
If the signal is caught by the calling process and control is returned
from the signal-catching function [see signal(2)], the calling process
resumes execution from the point of suspension; with a return value of -1
from pause and errno set to EINTR.
alarm(2), kill(2), signal(2), sigpause(2), wait(2)
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