Shell脚本切换电视频道

#!/system/bin/sh

time=$1
if [[ $time < 1 ]]
then
	echo "请输入运行次数"
else
	echo "请将焦点选中DTV或ATV频道"
	
	input keyevent 3
	sleep 1
	input keyevent 21
	sleep 1
	input keyevent 21
	sleep 2
	input keyevent 22
	sleep 2
	input keyevent 23
	sleep 1
	
	while [[ $time > 0 ]]
	do
		echo "运行次数$time"
		
		input keyevent 166
		input keyevent 166
		input keyevent 167
		
		
	let "time--"
	done
	echo "运行结束"
fi