anchor.diff:  
   function clean_up {
     # Remove the working directory
  -  rm -rf $CWD
  +  rm -rf "$CWD"
   }
   
   # On ir-/regular exit, invoke clean up
  
positive.code: # script and that are appended by '"$@"' will override any pre-defined value.
  
  ./create_ami.sh \
  --berkshelf-src $TOOL_DIR \
  --key-pair <%= @aws.keypair.file %> \
  --key-pair-name <%= @aws.keypair.name %> \
  --ami-id <%= @aws.base_ami %> \
  
negative.code: ################################################################################
  
  [ "$BUILD_TAG" = "" ] && usage && exit 1
  CWD="`pwd`/`echo $BUILD_TAG | sed 's/\ /_/g'`"
  mkdir -p "$CWD"
  cd "$CWD"
  
  ################################################################################
  # 1 - Download deployment repository
  ################################################################################
  
  TOOL_DIR="$CWD/`echo "<%= @deployment_repo %>" | sed 's/.*\/\([^\/\.]*\)\.git/\1/g'`"
  git clone <%= @deployment_repo %>
  cd "$TOOL_DIR"
  # Its safe to call the submodule commands here
  # even if the repos does not have any of these.
  git submodule init
  