Location updater script for laptop users using gnome-shell-extension-weather. Script gets location based on surrounding wireless access points, then converts that into a woeid.

gnome-shell-extension-weather-location-updater.sh

#!/bin/bash

#    gnome-shell-extension-weather-location-updater.sh is free software: you 
#    can redistribute it and/or modify it under the terms of the GNU General 
#    Public License as published by the Free Software Foundation, either version 
#    3 of the License, or (at your option) any later version.
#
#    gnome-shell-extension-weather-location-updater.sh is distributed in the hope 
#    that it will be useful, but WITHOUT ANY WARRANTY; without even the implied 
#    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.


WIRELESS_INTERFACE=eth1

#Currently only gets first AP (should get all)
ACCESS_POINTS=$(
	iwlist $WIRELESS_INTERFACE scan \
	| grep Address \
	| head -1 \
	| sed 's/.*: //'
)

REQUEST=$(
	/bin/echo '{"version":"1.1.0","host":"maps.google.com","request_address":true,"address_language":"en_GB","wifi_towers":[{"mac_address":"$ACCESS_POINTS","signal_strength":8,"age":0}]}'
)

# Use Google API to get coordinates from surrounding wireless access points.
LOCATION=$(
	wget -q --post-data="$REQUEST" -O - http://www.google.com/loc/json \
	| sed -e 's/{/\n/g' -e 's/,/\n/g'
)

LATITUDE=$(echo $LOCATION | awk '{print $2}' | sed 's/.*://g')
LONGITUDE=$(echo $LOCATION | awk '{print $3}' | sed 's/.*://g')

# Use Yahoo API to get WOEID from longitude/latitude.
WOEID=$(
	curl --silent http://query.yahooapis.com/v1/public/yql?q=select%20woeid%20from%20geo.placefinder%20where%20text%3D%22$LATITUDE%2C$LONGITUDE%22%20and%20gflags%3D%22R%22 \
	| grep woeid \
	| sed -e s'/.*<woeid>//' -e 's/<\/woeid>.*//'
)

gsettings set org.gnome.shell.extensions.weather woeid $WOEID