109. Shells, Terminals, and Processes Explained: Bash vs Zsh vs Node.js + Script Demo

In this video, we explore how shells like Bash and Zsh work behind the scenes, how terminal applications spawn processes, and how Node.js scripts relate to shell scripts.
🔍 You’ll learn:
What a shell is and how it's different from the terminal
How multiple shell instances (Bash/Zsh) work
What parent and child processes are
How terminal emulators like iTerm spawn processes
How Node.js uses spawn vs exec under the hood
Writing and running shell scripts (.sh files)
Shell variables, echo, sleep, and basic arithmetic
🛠 This is a great intro for beginners curious about the OS internals, scripting, and how developer tools interact with the system.
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Видео 109. Shells, Terminals, and Processes Explained: Bash vs Zsh vs Node.js + Script Demo канала Leela Web Dev