Hacker News front pageWill Keleher7 min readintermediate
Telling a Computer to Do Things
Summary
The author explains how learning shell scripting unlocked the ability to automate and stitch together tools, emphasizing that proficiency is more about a rich CLI toolbox than syntax. He provides concrete tips, tool suggestions, and examples for writing maintainable scripts.
- Shell scripts let you combine commands with control flow (if, loops, pipes) to automate complex tasks.
- Mastering the shell is 20% syntax, 80% knowing useful CLI tools like fzf, xargs, rsync, direnv, duckdb, gh.
- For teams comfortable with JavaScript, the zx library offers a more ergonomic way to write shell‑style scripts.
- Simplify error handling: use `if ! cmd; then …` instead of toggling `set +e` and checking `$?`.
Engineers who write build, deployment, or test automation should know shell scripting to create reliable, maintainable workflows.
5/10
