wttr.sh

#!/bin/bash

URL="https://wttr.in/"
URLv2="https://v2.wttr.in/"
URLv3="https://v3.wttr.in/"

Help()
{
echo -e "
Write 'wttr {your+city+name}' to check the  weather condition of your city.
Surround city name with single- or double-quotes if city name contains more than one word.
You can also put a '+' (plus-sign) in beetween words when you do not want to surround with quotes.
Examples:
   wttr
   wttr cologne
   wttr \"Den Haag, Netherland\"
   wttr Den+Haag
   wttr \"Den Haag Street, South Africa\"
   wttr New+York
You can type 'wttr' only if you have defined a standard city.
Parameters:
    -h for some help (this page)
    -m for photo of moon
    -v2 to fetch different weather report view for the standard city
    -v2 {your city name} to fetch different weather report view for city mentioned
    -v3 {your city name} to fetch an in-terminal graphic for the given region.
Hint:
     When using '-v3' you do not need to add the '.sxl' to the
     end of the region/city name. The script will add it automatically.
Any bugs? Any suggestions? Contact information at https://cbrueggenolte.de/impressum
"
}

if [ "$#" == "0" ] && [ "$def" == "" ];then
    curl wttr.in
elif [ "$#" -gt "2" ];then
    echo -e "too many parameters.\n"
else
    case $1 in
        "-h")
            Help
            ;;
        "-m")
            curl http://wttr.in/moon
            ;;
        "-v2")
            if [ "$#" == "2" ];then
                city="$2"
                city=${city// /+}
                city=${city//[^a-zA-Z0-9+]}
                curl $URLv2"$city"
            else
                curl $URLv2"$def"
            fi
            ;;
        "-v3")
            if [ "$#" == "2" ];then
                city="$2"
                city=${city// /+}
                city=${city//[^a-zA-Z0-9+]}
                curl $URLv3"$city".sxl
            else
                curl $URLv3"$def".sxl
            fi
            ;;
        *)
            city=$1
            city=${city// /+}
            city=${city//[^a-zA-Z0-9+]}
            curl $URL"$city"
            ;;
    esac
fi