Script to create a ssh tunnel to a host

sshtunnel.sh

#!/bin/bash

#Script to create a SSH Tunnel by Jota Freitas Jr

clear

echo "SSH Tunnel - Create a Connection"
echo "Let's Config our Dynamic Connection!"

read -p "Enter hostname/IP that you want to connect: " host

if [[ $host ]] 
then
	echo "Host entered: $host"
else
	echo "Error: no host/ip entered! - Try Again!"
	exit 1
fi

read -p "Enter the server username: " username

if [[ $username ]] 
then
	echo "Server username: $username"
else
	echo "Error: no username entered! - Try Again!"
	exit 1
fi

read -p "Enter local proxy port (blank - port 22): " port

if [[ $port ]] 
then
	echo "Port entered: $port"
else
	port=22
	echo "Using default port: $port"
fi

read -p "Are using private key file? (y/n - default n): " key_yn

#to lower case
if [[ $key_yn ]]
then
	if [[ $key_yn == "y" ]]
	then
		read -p "Enter key file path: " key_path
	fi
else 
	key_yn="n"
	echo "No key file entered"
fi

read -p "Enter listening port (blank - port 8080): " list_port

if [[ $list_port ]] 
then
	echo "Port entered: $list_port"
else
	list_port=8080
	echo "Using default listening port: $list_port"
fi

echo "Connecting to host $host at port $port - Press ^C to exit"

if [[ $key_yn == "y" ]]
then
	ssh -D $list_port -C -N -i $key_path $username@$host
else
	ssh -D $list_port -C -N $username@$host
fi