再到后面几章,就更多的是系统操作,也第一次切身的感受到 Unix 的设计哲学「Everything is a file」这句话到底意味着什么。后面还有教你如何用 c 语言写一个简易的 Web server。总之,终于理解对于这些系统操作到底是怎么工作的了,而不是人云亦云的「先调用函数 a,再调用函数 b」。
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