gnu-screen-weather

#!/bin/bash
function dateISO {
    date -u +"%Y-%m-%dT%H:%M:%S";
}

function externalIP {
    curl -s http://checkip.dyndns.org | sed 's/[a-zA-Z/<> :]//g' | tr -d '\r'
}

function geoIP {
    curl -s ipinfo.io/$(externalIP)
}

function getLocation {
    geoIP | grep -Po '(?<="loc": ")[^"]*'
}

function createForecastAPI {
curl -s https://api.forecast.io/forecast/XXXXXXXXXXX/$(getLocation),$(dateISO)?units=si
}

function getMaxTemp {
    createForecastAPI | grep -Po '(?<="temperatureMax":)[^,]*'
}

function getMinTemp {
    createForecastAPI | grep -Po '(?<="temperatureMin":)[^,]*'
}

function getCurTemp {
    createForecastAPI | grep -Po '(?<="temperature":)[^,]*' | head -1
}
usage="Dummy help"
while getopts "mic" opt; do
      case $opt in
               m)
                getMaxTemp

                ;;
               i)
                getMinTemp
                ;;
               c)
                getCurTemp
                ;;
             \?)
               echo "Invalid option: -$OPTARG" >&2
               ;;
       esac
done