added sudo check, cleaned up comments

debian/debian-regenerate-ssh-keys-machine-id.sh

@@ -1,6 +1,12 @@
 #!/bin/bash
 
-# ask to regenerate machine-id
+if [ "$EUID" -ne 0 ]
+  then
+  echo "Please run as root"
+  exit
+fi
+
+# regenerate machine-id
 if [[ ! -f /etc/machine-id-regenerated ]]
     then
         rm -f /etc/machine-id /var/lib/dbus/machine-id
@@ -12,7 +18,7 @@ if [[ ! -f /etc/machine-id-regenerated ]]
         echo "Machine-id not regenerated."
 fi
 
-# ask to regenerate ssh host keys
+# regenerate ssh host keys
 if [[ ! -d /etc/cloud ]]
     then
         if [[ ! -f /home/akanealw/.ssh/ssh_keys_regenerated ]]