set -e URL="http://download.racket-lang.org/installers/$RACKET_VERSION/racket/racket-$RACKET_VERSION-bin-x86_64-linux-ubuntu-precise.sh" INSTALL="./racket-$RACKET_VERSION.sh" echo "Downloading $URL to $INSTALL:" curl -o $INSTALL $URL echo "Running $INSTALL to install Racket:" chmod u+rx "$INSTALL" sudo "$INSTALL" <