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##回车

for ((i=0;i<10000;i++))
do
	j=$((i%4))
	if [ "${j}" -eq 0 ]
	then
		echo -ne "\r${i}-"
	elif [ "${j}" -eq 1 ]
	then
		echo -ne "\r${i}\\"
	elif [ "${j}" -eq 2 ]
	then
		echo -ne "\r${i}|"
	else
		echo -ne "\r${i}/"
	fi
	sleep 0.2
done

##退格

echo -ne ">0%"
for ((i=1;i<100;i++))
do
	if [ "${i}" -le 10 ]
	then
		echo -ne "\b\b\b->${i}%"
	else
		echo -ne "\b\b\b\b->${i}%"
	fi
	sleep 0.3
done

##tput

clear
for ((i=1;i<10000;i++))
do
	tput cup 0
	echo "aa ${i}"
	echo "bb ${i}-${i}"
	sleep 1
done