Bash heartbeat bash

Minimal heartbeat for Linux / macOS. Put in cron at any cadence; pair with capture.freshness.

Placeholders only. Before running, replace YOUR_URL with your capture endpoint's POST URL . (Open this page from your capture object to have these auto-filled.)

#!/bin/bash
# heartbeat.sh — site1.erralert.com check-in. Put in cron.
URL='YOUR_URL/heartbeat'
curl -fsS -m 15 -H 'Content-Type: application/json' \
  --data-raw "{\"hostname\": \"$(hostname)\"}" \
  "$URL"

Recommended pairing

Add a capture.freshness check to this capture object.
max_silence_seconds = your-cron-interval x 2.

What is the filename?

heartbeat.sh — this is the suggested name for the downloaded file. Rename freely if you prefer.