实验目的:了解$HOME、pwd在‘’“”中的输出
echo 'my home is $HOME'
echo "my home is $HOME"
echo 'my home is $HOME'
echo "my home is `pwd` "
echo 'my home is `pwd` '
输出:
echo 'my home is $HOME'
echo "my home is $HOME"
echo 'my home is $HOME'
echo "my home is `pwd` "
echo 'my home is `pwd` '
my home is $HOME
my home is /Users/Vicent
my home is $HOME
my home is /Users/Vicent
my home is `pwd`
实验结果说明:
关于$HOME
看结果我们可以得知在单引号内输出的是一样的字符串
但是在双引号内我们可以看到输出的是环境变量
关于 `pwd`
看结果我们可以得知在单引号内输出的是一样的字符串
但是在双引号内我们可以看到输出的是环境变量