Write a production-ready Bash script

Variables & quoting

🐚 Bash / Shell Scripting · Store values, interpolate them, and — most importantly — quote them to survive spaces, globs, and special characters.

Control flow — if, for, while, case

🐚 Bash / Shell Scripting · Branch on exit codes, loop over lists or streams, match patterns. Bash control flow is quirky — exit code 0 means true.

Functions & arguments

🐚 Bash / Shell Scripting · Group commands into reusable units, accept positional parameters, and return exit codes. Not quite like functions in 'real' languages.

Pipes & redirections

🐚 Bash / Shell Scripting · Connect the output of one command to the input of another (`|`), or send it to a file (`>`, `>>`). The core composition tool of Unix.

Text processing — grep, sed, awk, cut, sort, uniq

🐚 Bash / Shell Scripting · The Unix data-wrangling toolkit. Compose these with pipes and you solve 90% of log/CSV/text tasks without writing a real program.

Scripts, shebang & safe defaults

🐚 Bash / Shell Scripting · A script is a file of commands. The shebang picks the interpreter; `set -euo pipefail` turns silent bugs into loud failures.