title: PUMA, trying to stop server, Invalid Signal, number or name
body: <p>Im trying to stop puma server with a script that i've found here --> <a href="https://gist.github.com/joneslee85/5844933" rel="nofollow">script</a></p>
  
  <pre><code>#!/usr/bin/env bash
  
  # Simple move this file into your Rails `script` folder. Also make sure you `chmod +x puma.sh`.
  # Please modify the CONSTANT variables to fit your configurations.
  
  # The script will start with config set by $PUMA_CONFIG_FILE by default
  
  PUMA_CONFIG_FILE=config/puma.rb
  PUMA_PID_FILE=tmp/pids/puma.pid
  PUMA_SOCKET=tmp/sockets/puma.sock
  
  # check if puma process is running
  puma_is_running() {
    if [ -S $PUMA_SOCKET ] ; then
      if [ -e $PUMA_PID_FILE ] ; then
        if cat $PUMA_PID_FILE | xargs pgrep -P &gt; /dev/null ; then
          return 0
        else
          echo "No puma process found"
        fi
      else
        echo "No puma pid file found"
      fi
    else
      echo "No puma socket found"
    fi
  
    return 1
  }
  
  case "$1" in
    start)
      echo "Starting puma..."
      rm -f $PUMA_SOCKET
      if [ -e $PUMA_CONFIG_FILE ] ; then
        bundle exec puma --config $PUMA_CONFIG_FILE
      else
        bundle exec puma --daemon --bind unix://$PUMA_SOCKET --pidfile $PUMA_PID_FILE
      fi
  
      echo "done"
      ;;
  
    stop)
      echo "Stopping puma..."
        kill -s SIGTERM `cat $PUMA_PID_FILE`
        rm -f $PUMA_PID_FILE
        rm -f $PUMA_SOCKET
  
      echo "done"
      ;;
  
    restart)
      if puma_is_running ; then
        echo "Hot-restarting puma..."
        kill -s SIGUSR2 `cat $PUMA_PID_FILE`
  
        echo "Doublechecking the process restart..."
        sleep 5
        if puma_is_running ; then
          echo "done"
          exit 0
        else
          echo "Puma restart failed :/"
        fi
      fi
  
      echo "Trying cold reboot"
      script/puma.sh start
      ;;
  
    *)
      echo "Usage: script/puma.sh {start|stop|restart}" &gt;&amp;2
      ;;
  esac
  </code></pre>
  
  <p>When I try to stop it it gives me this error</p>
  
  <pre><code>/etc/init.d/puma: 54: kill: invalid signal number or name: SIGTERM
  </code></pre>
  
  <p>What am I missing here?</p>