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怎样让$和字符串合体得到变量解决办法

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2016-06-13 10:17:13850browse

怎样让$和字符串合体得到变量
怎样让$和字符串合体得到变量?


------解决方案--------------------
echo "${$str}";

或者 $$str;
------解决方案--------------------
可变变量

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