Building a Simple Shell: A Collaboration Tale

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3 min read

Have you ever wondered what goes behind the scenes when you type a command into your terminal and hit enter? Most people take it for granted, but there's a lot of complexity involved in even the simplest interactions with a computer. If you're curious about the magic that happens when you type "ls" or "cd" and press enter, you're in the right place.

I recently had the opportunity to collaborate with a talented developer based in the United States on a project that demystifies this process: a Simple Shell. Together, we embarked on a coding journey that led to the creation of a functional shell, and I’m excited to share our experience with you.

The Birth of Our Simple Shell

Our project, named the Simple Shell, is a testament to the power of collaboration and open-source development. This shell, located in my GitHub repository(that I've shared the link below this article), consists of multiple files, each serving a specific purpose in the grand scheme of things. Let’s take a peek into the repository to understand the architecture of our Simple Shell:

  • history.c: This file contains functions related to command history, allowing users to navigate through their previous inputs.

  • builtin.c and builtin1.c: These files handle built-in shell functions, including exits and other essential operations.

  • environ.c and getenv.c: These files deal with environmental variables, ensuring that the shell environment remains intact.

  • errors.c and errors1.c: These files are all about error handling, making sure that our shell provides meaningful feedback to users.

  • parse.c and tokenizer.c: These files are crucial for parsing user input and breaking it down into understandable components.

  • shell_loop.c and main.c: These files form the heart of our shell, orchestrating the overall flow of the program.

Our Collaborative Process

Collaborating across borders and time zones, as a Kenyan in East Africa my American counterpart and I faced challenges that tested our coding skills and communication abilities. We had to ensure that our code was efficient, and bug-free. Regular video calls and online collaboration tools such as Google meet and Trello became our best friends, enabling us to discuss ideas, debug issues, and plan our next steps effectively.

One of the most significant aspects of our collaboration was the constant feedback loop. We reviewed each other’s code, offered suggestions, and implemented improvements collaboratively. This iterative process not only enhanced the quality of our code but also honed our problem-solving skills. Currently, Darren(the American-based developer) and I are working on an Android real-world project that solves a certain problem in Kenyan boarding schools and I can't wait to write about it once we are 100% done with it.

The Lessons We Learned

Building a Simple Shell from scratch taught us invaluable lessons. We learned the importance of clear communication, efficient organization, and attention to detail. Debugging became a cherished skill, and we discovered the satisfaction of solving intricate puzzles within our code. Moreover, we grasped the essence of collaboration: combining our strengths to create something far more significant than what we could achieve individually.

Join Our Coding Adventure

If you are intrigued by the world of shell scripting, I encourage you to explore our Simple Shell repository on GitHub (https://github.com/KennOtieno/simple_shell.git). Dive into the code, experiment with it, and perhaps even contribute to its development. Open-source projects like these are proven to thrive on the expertise of the community, and your involvement could make a significant difference.

In conclusion, our journey in creating the Simple Shell was not just about writing lines of code; it was about learning, growing, and collaborating. The Simple Shell project stands as a testament to what can be achieved when two or more ambitious individuals come together to solve complex problems.

Thank you for reading my article, Stay tuned for more. Happy coding!

Note: You can find the Simple Shell repository on GitHub by clicking this link: https://github.com/KennOtieno/simple_shell.git, where you can explore the code, contribute, or simply learn from our implementation.