从C，C在Linux的发行系统命令++ [英] Issuing system commands in Linux from C, C++

问题描述

我知道，在DOS / Windows应用程序，可以发出系统中使用的台词从code命令：

I know that in a DOS/Windows application, you can issue system commands from code using lines like:

system("pause");

或

system("myProgram.exe");

... stdlib.h中。是否有一个类似的Linux命令，如果是这头文件我会找到它？

...from stdlib.h. Is there a similar Linux command, and if so which header file would I find it in?

此外，这被认为是不好的编程习惯？我正在考虑试图让使用 lsmod的命令加载籽粒模块的列表。这是一个好主意还是坏主意？我发现一些网站，似乎在查看系统调用（至少系统（暂停）;）从负面的角度

Also, is this considered bad programming practice? I am considering trying to get a list of loaded kernal modules using the lsmod command. Is that a good idea or bad idea? I found some websites that seemed to view system calls (at least system("pause");) in a negative light.

推荐答案

这并不奇怪，命令仍然

system("whatever");

和头仍文件stdlib.h 。这头文件的名字的意思是标准库，这意味着它是上支持C每一个标准的平台。

and the header is still stdlib.h. That header file's name means "standard library", which means it's on every standard platform that supports C.

和肯定，称系统（）往往是一个坏主意。有做事通常更有计划性的方式。

And yes, calling system() is often a bad idea. There are usually more programmatic ways of doing things.

如果您想了解 lsmod的的作品，你可以随时查找了它的源代码code，看看主要的系统调用，它使。然后使用这些调用自己。

If you want to see how lsmod works, you can always look-up its source code and see what the major system calls are that it makes. Then use those calls yourself.

一个快速谷歌搜索变成了此链接，这表明 lsmod的正在读的/ proc /模块。

A quick Google search turns up this link, which indicates that lsmod is reading the contents of /proc/modules.

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