Finding the WiFi network name (SSID) in OS X via shell script

Question

How can I find the WiFi network name I'm connected to on Snow Leopard via shell script?

Answer 1

network_SSID="$(/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I | sed -e "s/^  *SSID: //p" -e d)"

Answer 2

#!/bin/bash
SSID=$(/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I | awk -F': ' '/ SSID/ {print $2}')
echo $SSID