ready

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 代码 · 共 14 行

#!/bin/sh
#@(#)ready	4.1 (ULTRIX) 7/2/90
while :
do
	sleep 2
	echo -n "
Are you ready? (y/n): "
	read X
	case "$X" in
	[yY]*)	break
		;;
	esac
done