rtunnel

#!/bin/bash
# Place in /usr/bin/ and set executable to run straight from the terminal.
# Saves your tired fingers from entering the same ssh tunnel command over and over.
red='\033[1;31m' # Light red
green='\033[1;32m' # Light green
NC='\033[0m' # No color

tunnel_cmd="" # Tunnel command to be run (probably of the form ssh -N -f -L xxxx:localhost:xxxx user@host)

case "$1" in
	up)
		echo $"Launching ssh tunnel..."
		ps aux | grep -v grep | grep "$tunnel_cmd"
		if [ $? -eq 1 ]; then # There's no tunnel already
			$tunnel_cmd
			if [ $? -eq 0 ]; then
				echo -e $"${green}Tunnel created.${NC}"
			else
				echo -e $"${red}Failed to create tunnel.${NC}"
				exit 1
			fi
		else
			echo -e $"${red}Failed to create tunnel.${NC}\nTunnel is already up"
			exit 1
		fi
	;;
	down)
		echo $"Killing tunnel..."
		kill $(pgrep -a ssh | grep "$tunnel_cmd" | awk '{print $1}')
		if [ $? -eq 0 ]; then
			echo -e $"${green}Tunnel killed.${NC}"
		else
			echo -e $"${red}Failed to kill tunnel.${NC}"
		fi
	;;
	status)
		ps aux | grep -v grep | grep "$tunnel_cmd"
		if [ $? -eq 0 ]; then
			echo -e $"Tunnel is ${green}up${NC}."
		else
			echo -e $"Tunnel is ${red}not up${NC}."
		fi
	;;
	*)
		echo -e $"Invalid parameters.\n\tUsage: $0 {up|down|status}"
		exit 1
	;;
esac