Update 20150128 Linux Basics--How To Check If A Package Is Installed Or Not In Ubuntu.md

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geekpi 2015-01-28 21:08:50 +08:00
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Linux Basics: How To Check If A Package Is Installed Or Not In Ubuntu
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![](http://180016988.r.cdn77.net/wp-content/uploads/2014/04/ubuntu-790x558.png)