Setting Up SBT on Ubuntu

So I have had to re-install my OS several times over the past month mainly due to my impatience (installing 11.10 beta and not having it working properly) and I have found that my SBT configurations generally evaporate with every re-installation so I wrote a little script to automate the whole process. A bit like my previous get Scala script so once again just copy and paste this into a text file, make it executable with chmod +x <filename> and run it

#!/bin/bash

cd ~

echo --------------------------------------------------------------------------------------------  
echo - Getting SBT Launcher  
echo --------------------------------------------------------------------------------------------  
wget http://typesafe.artifactoryonline.com/typesafe/ivy-releases/org.scala-tools.sbt/sbt-launch/0.11.0/sbt-launch.jar

printf 'java -Xmx512M -jar `dirname $0`/sbt-launch.jar "$@"' > sbt

chmod +x ./sbt

echo --------------------------------------------  
echo - Move sbt and sbt-lauch to share  
echo --------------------------------------------

sudo mv sbt /usr/share/sbt  
sudo mv sbt /usr/share/sbt-launch.jar

echo --------------------------------------------------------------------------------------------  
echo - symlinking sbt and sbt-lauch to /usr/bin/{sbt, sbt-lanch.jar}  
echo --------------------------------------------------------------------------------------------  
sudo ln -s /usr/share/sbt /usr/bin/sbt  
sudo ln -s /usr/share/sbt-launch.jar /usr/bin/sbt-launch.jar

I suppose, when I get time I can make this accept parameters so you can specify the version of SBT you want and the file name you want to use etc but for now this should suffice...
comments welcome.