Building a Toy Shell in C to Understand System Calls and Shell Internals

The shell sits in front of a lot of my work, but I mostly use it for the outcome: running unix commands and scripts, creating branches and making commits.

Unlike when I'm writing code, I'm rarely thinking about how the shell itself works under the hood.

So, to dig a bit deeper into shells, I'm going to build a toy one until I run out of time.

I built a tiny shell in C to learn what fork, execvp, and dup2 are doing under the hood.

A shell is an interactive program that reads commands from the user and executes them.