创建shell脚本环境
vim guess
极简猜大小
echo $1 if [ $1 -gt 12 ]; then echo "猜大了" elif [ $1 -lt 12 ]; then echo "猜小了" else echo "猜对了" break fi
用while语句 猜大小
while true; do echo "请输入一个数字" read aa; if [ $aa -gt 12 ]; then echo "猜大了" elif [ $aa -lt 12 ]; then echo "猜小了" else echo "猜对了" break fi done