ref: 3b10c3e9a0a6be334302573b03f6f32bdda04864
dir: /sys/src/cmd/dial/drain.c/
#include <u.h>
#include <libc.h>
void
ding(void*, char *s)
{
	if(strstr(s, "alarm"))
		noted(NCONT);
	else
		noted(NDFLT);
}
void
main(void)
{
	char buf[256];
	alarm(100);
	while(read(0, buf, sizeof(buf)) > 0)
		;
	alarm(0);
	exits(0);
}