Primitive bash http server to serve the status

osrm-thread-watchdog-server.sh

#!/usr/bin/env bash

# Example:
#   script.sh /tmp/status [8080] [40]

while true; do
  PERCENT=`(cat ${1} | grep "Load:" | cut -d" " -f2) 2>/dev/null`
  STATUS=`[[ -z "${PERCENT}" || "${PERCENT}" -gt ${3-79} ]] && echo "503" || echo "204"`
  echo -e "HTTP/1.1 ${STATUS} OK\r\n\r\n" | nc -l --send-only -p ${2-8080} 1>/dev/null
done