Improved etc/init.d script

etc/smartmeter

@@ -5,9 +5,15 @@
 # description: Starts Smartmeter as an unprivileged user.
 #
 
-# Create a wrapper using 'rvm alias smartmeter ruby-1.9.3-p484@smartmeter'
+if [[ -s "/usr/local/rvm/environments/ruby-1.9.3-p484@smartmeter" ]]
+then
+  source "/usr/local/rvm/environments/ruby-1.9.3-p484@smartmeter"
+  exec sudo -u www-data ruby /mnt/usb/ruby/smartmeter/daemonize.rb $1
+  RETVAL=$?
 
-sudo -u www-data /usr/local/rvm/wrappers/smartmeter/ruby /home/pcog/smartmeter/daemonize.rb $1
-RETVAL=$?
+  exit $RETVAL
+else
+  echo "ERROR: Missing RVM environment file: '/usr/local/rvm/environments/ruby-1.9.3-p484@smartmeter'" >&2
+  exit 1
+fi
 
-exit $RETVAL