使用变量时找不到命令

Question

我一直在尝试修复错误 即使变量不是命令，错误也会显示“找不到您的输入命令”

#/bin/bash

echo "Hello, World!!"
echo "Press enter to exit."
read your_input
if [your_input == ""]
then
    echo "Bye!!"
else
    echo "You typed $your_input anyway. Bye!!"
fi