比方说，三个月你就可以掌握基本知识。

You could learn the basics in, let's say , three months.

《牛津词典》

在掌握基本知识以后，只要有一本手册，您就可以畅通无阻了。

Once you know the basics, all you need is a manual and you're ready to hit the ground running.

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在开始之前，应该掌握一些在命令行下工作的基本知识。

Before we begin, you should have a basic idea of working at the command line.

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