SSH tunnel setup script. Source in your profile for awesomeness.

ssh_tunnel.sh

#!/bin/bash
function proxtun(){
#Validity check of settings
if [ ! -e ~/.proxtun ]; then
  echo "No proxy user/host set. Please set up a remote machine with SSH"
  echo "tunneling capability (with keys) and then put that user@host in"
  echo "~/.proxtun"
  return 5
fi
tunhost=`cat ~/.proxtun`
tunpid=`pgrep -f '\-D 9001 '`
if [ -z $tunpid ]; then
  echo "Establishing SSH tunnel"
  ssh -D 9001 -Nf -o ExitOnForwardFailure=yes $tunhost
  tunpid=`pgrep -f '\-D 9001 '`
  if [ -z $tunpid ]; then
    echo "Error: Unable to set up tunnel."
  fi
else
  echo "Shutting down SSH tunnel"
  kill -TERM $tunpid
fi
}