Fidenz bash challenge.

WeatherReporter.sh

#!/bin/bash
# WeatherReporter 1.0

scriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
scriptFile="$scriptDir/$0"
tmpWeatherXMLFile="$scriptDir/sydneyData.xml"
logFile="$scriptDir/weatherReport.log"
tmpCronFile="$scriptDir/cronInfo"

function checkRequiredUtils() {
  utilSet=("wget" "xmllint" "crontab")
  for util in ${utilSet[*]}; do
    type $util &> /dev/null
    exitCode=$?
    if [ $exitCode -ne 0 ]
    then
      echo "[!] Require '${util}' but can't find."
      exit 1
    fi
  done
}

function setupCronjob() {
  crontab -l | grep $scriptFile &> /dev/null
  exitCode=$?
  if [ $exitCode -ne 0 ]
  then
    crontab -l > $tmpCronFile
    echo "0 * * * * $scriptFile" >> $tmpCronFile
    crontab $tmpCronFile
    rm $tmpCronFile
    echo '[+] Sheduled weather fetch for every hour'
  fi
}

function fetchXML(){
  wget http://rss.weather.com.au/nsw/sydney -O $tmpWeatherXMLFile &>/dev/null
  echo '[+] Fetched weather data'
  sydneyData=$(cat $tmpWeatherXMLFile)
  date=$(xmllint --xpath '//channel/pubDate/text()' $tmpWeatherXMLFile)
  weatherData=$(xmllint --xpath '//channel/item[1]/description' $tmpWeatherXMLFile | sed -n 's:.*</b>\(.*\)<br />.*:\1:p')
  rm $tmpWeatherXMLFile
}

function main() {
  checkRequiredUtils
  setupCronjob $@
  fetchXML

  # weather dataset
  dt=()
  for data in $weatherData; do
    dt+=($data)
  done
  echo '[+] Weather data of Sydney'
tee -a $logFile << EOT             
+------------------------------------------------------------------------------------------------------------------------+
| Date: $(printf %-113s "$date")|
+--------------+--------------+--------------+--------------+--------------+---------------+--------------+--------------+
| $(printf %-12s "Temperature") | $(printf %-12s "DewPoint") | $(printf %-12s "Humidity") | $(printf %-12s "WindSpeed") | $(printf %-12s "WindGusts") | $(printf %-12s "WindDirection") | $(printf %-12s "Pressure") | $(printf %-12s "Rain") |
+--------------+--------------+--------------+--------------+--------------+---------------+--------------+--------------+
| $(printf %-12s ${dt[0]//&deg;/}) | $(printf %-12s ${dt[1]//&deg;/}) | $(printf %-12s ${dt[2]}) | $(printf %-12s ${dt[3]}) | $(printf %-12s ${dt[4]}) | $(printf %-12s ${dt[5]})  | $(printf %-12s ${dt[6]}) | $(printf %-12s ${dt[7]}) |
+--------------+--------------+--------------+--------------+--------------+---------------+--------------+--------------+
EOT
}

main $@