Looks for a pidfile to a previously started SSH background process, then stops the process.

remotetunnel-dn.sh

#!/bin/bash

# Get the directory where the script lives.
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
# Setup a variable for easy reference to the pidfile
pidfile=${SCRIPT_DIR}/tunnel.pid

# Check for our pidfile, which we expect in order to be able to control the process
if [ ! -f $pidfile ]; then
  echo "Tunnel pidfile does not exist. Tunnel might not up or not known! Exiting!"
  exit -1
fi

# Pidfile exists so we keep going...

# Read pidfile
bg_pid=$(<${pidfile})

# Kill process with pid
kill -9 ${bg_pid}

# Remove the pidfile
rm ${pidfile}

# Output
echo "Tunnel process PID=${bg_pid} stopped."