#!/bin/bash
PRICE=$(exrp $RANDOM % 1000)
t=0
echo “商品價格爲0-999之間，猜猜看”
while true
do
read -p "請輸入您猜測的價格: " I
let t++
if [ $I -eq $PRICE ] ; then
echo "恭喜你猜對了，實際價格是 $PRICE"
echo "您總共猜測了 $t 次 “
exit 0
elif [ $I -gt $PRUCE ] ; then
echo "太高了"
else
echo "太低了"
fi
done
#!/bin/bash
for NO in cat no
do
while true
do
read -p "Are you sure [Y/N]: " m
if [ $m = $NO ]
then
echo "結束 "
exit 0
elif [ $m = yes ]
then
echo "請繼續"
else
echo "您重新輸入"
fi
done
done
#！/bin/bash
read -p “請輸入一個字符，並按ENTER確認: ” KEY
case “$KEY” in
[a-z] | [A-Z])
echo “你輸入的是字母。 “
；；
[0-9])
echo “你輸入的是數字。 “
；；
*）
echo “你輸入的是空格、功能鍵、或其他字符。“
esac