Books

[goatedpenguin]

Can anyone recommend me some free online books/tutorials for OS & kernel & system programming? 

Thanks in advance  

[Sauron]

One of the most respected textbooks on operating systems is the "dinosaur book" https://archive.org/details/operating-system-concepts-9e/mode/2up

[goatedpenguin]

Thanks for the book, I will be looking forward to read it  

 

Also I wanted to ask something related to a function that I am not getting in C.

 

After include <unistd.h>

 

I used a function to in that header: getlogin_r(char *buf, size_t bufsize);

 

however I how do I actually use it to retrieve the username?

 

 

[wasab]

It should be set in the char* buf that you passed in. 

 

https://linux.die.net/man/3/getlogin_r

 

[goatedpenguin]

Thanks I think I got how to use  

[wasab]

If you want to learn unix system programming, there is no better way to do it by writting your own terminal emulator btw. It teaches you a lot of fundamental posix apis and core kernel services like forking, signaling, user permission control and ect ect ect. 

 

I did it as a college assigment. This taught me more than anything else. It made me appreciate and respect the terminal a lot more. You are welcome to study it. 

 

https://github.com/xiangsgao/Academics/tree/main/CSE_376_Advanced_UNIX_Porgramming/hw3-xiangsgao

 

 

[goatedpenguin]

Thanks for the help man, I have trying to learn C and I have made good progress with my bank management system, maybe after that I may consider making a terminal like you suggested and then a simple FTP server which I have always wanted to do