Get weather data from yahoo weather (meant for conky)

weather.sh

#!/bin/sh
# USAGE: weather.sh [NULL|both|forecast]

LOCATION_URL="http://weather.yahooapis.com/forecastrss?p=USCO0105&u=" #Denver

WEATHER=`curl -s "$LOCATION_URL" | grep "F<BR" | awk -F ' F<BR' '{print$1}'`

TOMORROW=`date --date="tomorrow" +%a`
FORECAST=`curl -s "$LOCATION_URL" | grep -oE "^[A-Z][a-z]{2} - .*-?[0-9]{1,3}" | grep "^$TOMORROW" | sed -r 's_High: \<(-?[0-9]{1,3})\> Low: \<(-?[0-9]{1,3})\>_\2\/\1_'`
FORECAST=`echo $FORECAST | sed -r ' \
	s/\<Thunderstorms\>/T-storms/g;
	s/\<Isolated\>/Iso/g;
	'`

if [ "$1" == "both" ]; then
	[ -n "$WEATHER" ] && echo "$WEATHER°F"
	[ -n "$FORECAST" ] && echo "$FORECAST°F"
elif [ "$1" == "forecast" ]; then
	[ -n "$FORECAST" ] && echo "$FORECAST°F"
elif [ -z "$1" ]; then
	if [ -z "$WEATHER" ]; then
  	echo "No Internet connection."
	else
  	echo "$WEATHER°F"
	fi
fi