Just some code to connect to a network via commandline on ubuntu

gistfile1.sh

#!/bin/bash

# Outputs our list of networks
sudo iwlist wlan0 scan

#configure before joining
sudo iwconfig wlan0 ap 00:18:E7:D1:C2:32 #mac of router to join
sudo iwconfig wlan0 essid dlink #name of network
sudo iwconfig wlan0 freq 2.437

#connect!
sudo dhclient wlan0