#!/bin/bash
# mere-demo: heartbeat logger used by the systemd guide.
n=0
trap 'echo "mere-demo: shutting down cleanly (pid $$)"; exit 0' TERM
echo "mere-demo: started (pid $$)"
while true; do
  n=$((n+1))
  echo "mere-demo: heartbeat $n (pid $$)"
  sleep 2 &
  wait $!
done