I built a small Unix-style shell in C that helps to understand more than just how to execute commands.
If u wanted to understand more than just how to execute commands.? Here it is ... (pshell) Introducing P-Shell: A shell that shows its work. While building it, I explored how Unix processes actually work under the hood. Some of the things I've implemented: Command execution using "fork()" and "execvp()" Pipes and output redirection (">", ">>") File descriptor manipulation using "dup2()" An…
P-Shell is a shell written in C that goes beyond merely executing commands to provide insight into the underlying process. While developing this project, the author gained a deeper understanding of how Unix processes operate. Some of the key features implemented include:
- Command execution through fork() and execvp()
- Pipes and output redirection using the redirection operators ( >, < )
- Manipulation of file descriptors using dup2()
- An :explain mode that traces the steps taken by the shell during operation
- The ability to view processes through the /proc filesystem
- Creation and inspection of real zombie processes, followed by reaping them using waitpid()
The primary goal of P-Shell is to offer a transparent view into what happens during command execution, rather than allowing the shell to be treated as a black box. The author emphasizes that this project has been an excellent way to gain hands-on experience with C programming, Linux processes, and fundamental operating-system concepts.
Despite still being a work in progress, the author plans to continue enhancing P-Shell. Interested readers are encouraged to visit the project on GitHub at https://github.com/punithk-verse/p-shell and provide feedback. If the project piques your interest in C, Linux, or systems programming, consider leaving a ⭐️ rating on GitHub.
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