# Exercise: Three Things at Once

Exercise: Three Things at Once: Exercise: Three Things at Once.

Updated: November 10, 2026

1. [Exercise: Three Things at Once](https://www.ask-codey.com/lessons/exercise-bash-three-things-at-once) (Freelancer): Write three tools for a day's work on Bluebird Bakery's website: three-panes.sh sets up the server, the tests rerunning in watch and a free terminal in one tmux session, wait-for-site.sh waits for the site and gives up at a time limit, and resize-all.sh resizes photos four at a time, while a check script tells you what's done.

Source: https://www.ask-codey.com/courses/bash-in-depth/topics/exercise-bash-three-things-at-once