pause - suspend process until signal is received

Syntax

#include <unistd.h> int pause(void);

Description pause() suspends the calling process until delivery of a signal whose action is either to

	execute a signal-handling function or to terminate the process. If the action is to terminate the process, pause() will not return. If the action is to execute a signal-handling function, pause() will return after the signal-handling function returns. If threads are used, then the function affects the process or a thread in the following manner: Suspends the thread until it receives a signal.
Return val.	-1                     if an error occurs. errno is set to indicate the error. Since pause() suspends process execution indefinitely unless interrupted by a signal, there is no successful completion return value.
Errors	pause() will fail if:
	EINTR	A signal is caught by the calling process and control is returned from the signal-handling function.
See also	sigsuspend(), sleep(), unistd.h.