在平常的作业中，有时候老师让自己实现诸如cat等类的程式，有时候叫用shell实现，有时候用c实现，不过我经常一点头绪都没有，不过我想到 linux开源的，命令代码能拿来参考下阿，所以我就想看看linux命令的原始码，于是就开始了摆渡狗狗的搜索过程。从结果来看，有两种情况，一种是给予rpm的包的形式；另一种是基于deb包的形式。具体我也不知道该怎么描述，总之就是一种redhat的源码查看，一种是debian的源码查看。我是用的ubuntu，基于debian的，所以先前按照rpm的方式怎么也不奏效。-In normal operation, the teachers sometimes let their cat, such as the realization of such kind of programs, sometimes called the realization of using shell, sometimes with c to achieve, but I often do not have that idea, but I think open source linux, the command code can be used to refer to the next Arab-Israeli, so I wanted to look at the linux source command, the dog on the ferry began the search process. From the results, there are two cases, one is given the form of packages rpm　the other is based on the deb package format. I do not know the specific descr iption of how short is a source of redhat view, a view is the source of debian. I used ubuntu, a debian based, so the way earlier in accordance with how rpm does not work.