Shell if else

语句1
if [ expression ]
then
...
fi

 

语句2
if [ expression ]
then
...
else
...
fi

 

语句3
if [ expression 1 ]
then
...
elif [ expression 2 ]
then
...
elif [ expression 3 ]
then
...
else
...
fi

转载于:https://www.cnblogs.com/wwxbi/p/6171417.html