c shell(匹配)

匹配:
写法1.
#!/bin/sh
aa="aabbb";
bb="aab";
if [[ "${aa}" =  "${bb}"* ]];then
        echo "aaaaaaaaaaaaaa";
else
        echo "bbbbbbbbbbbbbb";
fi
~
写法2.
#!/bin/sh
aa="aabbb";
bb="aab";
if [[ ${aa} =  ${bb}* ]];then
        echo "aaaaaaaaaaaaaa";
else
        echo "bbbbbbbbbbbbbb";
fi
~