Its been a couple of weeks since I have been using Ubuntu 13.04. As far as the look & feel is concerned, its more or less same as Ubuntu 12.04 while with my daily work too I have not encountered something which has drastically changed. But there is something that started annoying me for past 3-4 days. The problem is that when ever I turn on my Ubuntu, a window saying System Program Problem Detected appears. It further says, Do You Want To Report The Problem Now?. I does not provide any way to get the details of the problem. You can either Cancel or Report Problem.

Here is a snapshot of the problem I am talking about :

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If it is ever desired to compare two directory trees in Linux then the file comparison utility diff can be used for this purpose. The Linux diff command provides options to check content based file differences along with new or missing files. In this article, we will learn quickly how to compare two directories in Linux using diff command.
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