#include <unistd.h>
#include <fcntl.h>
int main(void){

	int fd,ret;
        char buff[1024];
	fd = open("cat.c",O_RDONLY);
	while(ret = read(fd, buff, sizeof buff ) )
		write( 1, buff, ret);
	close(fd);
	return 0;
}

Timeout