A snippet to display wttr.in weather and refresh it every interval

weather.sh

#!/bin/bash

# Uses wttr.in to display weather in terminal
# Low values of `r` are rude. Don't overload wttr.in
# -l is location as postcode, airport code, or location name. IE ADL, Port Adelaide, 5014+SA
# -r is refresh rate in minutes. You do not need minute by minute updates.
# -b is blanking. Will blank out the terminal at the begining of each update if set.

usage() { echo "Usage: $0 [-l <location>] [-r <refresh rate>] [-b]" 1>&2; exit 1; }

LINES=$(tput lines)

while getopts "bl:r:" o; do
        case "${o}" in
                l) l=${OPTARG} ;;
                r) r=$((OPTARG * 60)) ;;
                b) b=1 ;;
                *) usage ;;
        esac
done

if [[ -z $r || -z $l ]]; then
        usage
fi

while true
do
        if [[ -n $b ]]; then
                printf '%0.s\n' {1..$(seq $LINES)}
        fi
        n=`date --date=+"+$r seconds"`
        curl -s 'wttr.in/'${l}'?1&n&F&Q' | sed '1 s/^/\n\n/' | sed 's/^/   /' && echo -e "\n  Last updated: `date`\n  Next update: $n\n"
        sleep ${r}
done