Small scripts that help testing

Loops, variables, exit codes. Automate boring setup: seed data, wait for port, collect logs.

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Step 1 of 1

Wait-for-url script

Example

#!/usr/bin/env bash
set -euo pipefail
url=${1:-https://httpbin.org/status/200}
for i in {1..10}; do
  if curl -sf "$url" >/dev/null; then echo ready; exit 0; fi
  sleep 1
done
echo timeout >&2; exit 1

Do this now

Write a script that curls until 200 or times out.

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Chapter learning outcomes

bash basics
exit codes
set -euo pipefail lite

Clear these before you leave

Script works locally