一張圖理解shell內核

1 #!/bin/bash 2 name="liu de hua";#name後面=不能有空格 3 echo "hello word ${name}work $name"; 4 name="zhou run fa"; readonly url="http://www.daokr.com"; 5 echo "hello ${name}"; 6 #url="www.baidu.com";#只

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