david.txt

#!/bin/bash

result=$(curl -sS http://holfuy.com/clientraw/s155/clientraw.txt)

set -f

variables=(${result//:/ })

current_wind_knots=${variables[1]}
gust_knots=${variables[2]}
degrees=${variables[3]}
temp=${variables[4]}
current_wind_ms=$(bc <<< "scale=2;($current_wind_knots * 0.51444444444)/1")
echo "current wind ms: $current_wind_ms"
echo "gust_knots: $gust_knots"
echo "Wind degrees: $degrees"

val=$(bc <<< "scale=0;($degrees/22.5)+0.5")
valRounded=$(echo $val | awk '{print ($0-int($0)<0.499)?int($0):int($0)+1}')
windDirections=(N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW)
index=($valRounded % 16)
echo "Wind direction: ${windDirections[$index]}"
echo "temperature: $temp"