npm install --save generator-hubot
npm install --save cron
#npm install --save request
#npm install --save hubot-scripts@latest

mkdir hogebot
cd hogebot
yo hubot
Bot adapter: rocketchat

cat > ./scripts/hello.coffee << 'EOF'
cronJob = require('cron').CronJob
child_process = require('child_process')
module.exports = (robot) ->
  robot.hear /hello/, (msg) ->
    msg.reply 'hi'
  cronjob = new cronJob('*/30 * * * * *', () =>
    envelope = room: "general"
    command = "/home/hubot/script.sh"
    #robot.send envelope, "Command: #{command}"
    child_process.exec command, (error, stdout, stderr) ->
      robot.send envelope, error if error?
      robot.send envelope, stdout if stdout? && stdout.length > 0
      robot.send envelope, stderr if stderr? && stderr.length > 0
  )
  cronjob.start()
EOF

cat > script.sh << 'EOF'
#!/bin/bash
curl http://jenkins:8080/ > /dev/null 2>&1
RET=$?
if [ "${RET}" -ne 0 ]; then
    echo "jenkins is not alive. error:${RET}"
fi
exit ${RET}
EOF