Update-checker optimized for bandwith

Quickly created this tonight; I may come back and explain in more detail, but basically, it parses the Bukkit 'Recommended' RSS-feed for new a new version-number. Keep in mind that this was made with the intention of being implemented into your main server-management script, and as such, you have to add the backup mechanics yourself.

YOU NEED RSSTAIL!
sudo apt-get install rsstail

Code:

echo "Extracting latest version-number from Bukkit's 'Recommended' feed..."
LATEST=`rsstail -1 -n 1 -N -u http://ci.bukkit.org/other/latest_recommended.rss | awk '{print $3}'`

if [ ! -f currentversion ];
then
  # File does not exist - create file and populate with latest version-number
  echo "File not found, creating file..."
  cat > currentversion --keyboardcat &>/dev/null
  echo "File created, populating file..."
  echo $LATEST > currentversion
  # Load contents into CURRENT
  echo "Done."
  exit 1
else
  # File exists - proceed with business as usual
  echo "Found file, proceeding."
  CURRENT=`cat currentversion`
fi

if [ "$LATEST" -gt "$CURRENT" ]
then
  echo "Current version: $CURRENT"
  echo "Latest version: $LATEST"
  echo "Updating..."
  ########################################
  ### REPLACE WITH UPDATER THINGAMAJOB ###
  ########################################
  echo $LATEST > currentversion
else
  echo "Current version: $CURRENT"
  echo "Latest version: $LATEST"
  echo "Not updating."
fi

Oh! Before I forget; yes I suck at commenting code, and yes I'm half-retarded.