原「Java面试必会」常用linux命令
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相信有很多一部分开发人员平时开发还都在windows上，用mac的相对还是少数。不管开发是用mac还是windows，最终程序部署都是在linux上，因此熟悉linux相关知识是必会的技能。以Java为主的面试，多了不会考linux常用命令，但是一两个问题还是能说明一些问题的。
下面先看以下3个问题linux常用命令，不管是不是准备面试，都是日常工作中用得到的。
netstat -anp| grep 80
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du –sh xxx/* 举例du -sh setup/*
