Bash

ELI5 — The Vibe Check

Bash is the most common shell — the language your terminal speaks by default on most Linux and older Mac computers. When people talk about 'writing a shell script', they usually mean Bash. It is old, a bit ugly, but it runs everywhere and every developer should know the basics.

Real Talk

Bash (Bourne Again SHell) is a Unix shell and command language released in 1989 as a free replacement for the Bourne shell. It is the default login shell on most Linux distributions and was the default on macOS until Catalina (2019). Bash scripts automate tasks through variables, conditionals, loops, functions, and command substitution.

Show Me The Code

#!/bin/bash
# A simple bash script:
NAME="World"
echo "Hello, $NAME!"

# Run with:
bash hello.sh
# or: chmod +x hello.sh && ./hello.sh

When You'll Hear This

"Write a Bash script to back up the database." / "Is this a Bash or Zsh environment?"