Shell
Domain: Computer Systems
🎯 Motivation
The program that interprets terminal commands. Bash, zsh, PowerShell are shells.
📋 Concrete Example
Shell (bash): you type ‘ls -la’. Bash interprets: list all files with details. It translates your commands into OS actions.
🔗 Analogy
The shell is like a translator between you and the OS - you speak human (commands), the shell translates to OS language (system calls), and translates the response back to you.