UNIX shell programming hellp

[Tozilla]

I'm trying to write a problem which can display a prompt,e.g My_shell$ and accept a command entered by the user by using fgets. Also, it needs to execute the command by invoking fork() and execvp() system call. Then, if user type "logout", the shell should exit.

My problem is that I don't know how to combine fgets, fork() and execvp() together inside the program.
Can anyone please show me some examples?
Thank you

 

[chipperMDW]

Read a command using fgets.
Fork the process, then have the child process exec the command entered.
Repeat.

Look at the man pages for fork and exec (and fgets, if necessary). There should also be some FAQs in either this forum or C++: Unix forum.