added sudo check, cleaned up comments

debian/debian-set-ip.sh

@@ -1,6 +1,12 @@
 #!/bin/bash
 
-# ask to set static ip address
+if [ "$EUID" -ne 0 ]
+  then
+  echo "Please run as root"
+  exit
+fi
+
+# set static ip address
 if [[ ! -d /etc/cloud ]]
     then
         if [[ ! -f /etc/network/interfaces.bak ]]