Questions about linux programming?

Questions about linux programming? -- Linux general technology-Linux programming and kernel information. The following is a detailed description. First, I am a cainiao!
I want to learn C/C ++ programming in linux and read many posts! Can you tell me where to start!
How to Learn what to learn and where to go (Direction )?~ What is the direction of learning linux? What is embedded?
I would like to ask if there are many programming directions in linux. Note that I am talking about programming.
Sometimes I ask others to say they want to learn programming. They recommend me to learn shell. Of course, I am very grateful for their enthusiasm. But I think there is a difference between shell programming and cmd batch processing in windows? I think they are very similar! Is Programming necessary! I don't think it is necessary ~ If you say something wrong, please correct it in time!

I have talked with many new users about programming in linux. Many of them don't know where to start learning too much. That's the problem? -- Where does it start? First, experts said they want to understand the linux system! After all, linux is also an operating system. Just like windows, do you have to learn programming by familiarizing yourself with the commands of each terminal from the basics of linux?

In fact, most programmers who want to learn programming in linux have c or c ++ basics. So we need some specific suggestions? How about learning QT directly? Or should I learn STL? I know it's just people, but after all, we still have something in common !...... In short, there are many questions to be enlightened by experts! I also hope that you can recommend several books ~ You can get started with advanced linux programming!

Well, it may be a bit of a complaint, but it is indeed my voice (6) m: B