do not reobot machines

acatcher/set_hostname.sh

@@ -3,6 +3,10 @@
 MAC=`/sbin/ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}' | tr '[A-Z]' '[a-z]'`
 if grep -q $MAC HOSTS; then
   HOSTNAME=`grep $MAC HOSTS | cut -d\| -f1`
+  if [ "$HOSTNAME" = "`hostname`" ]; then
+    echo 'hostname is already correct'
+    exit 1
+  fi
   echo "setting hostname to $HOSTNAME"
   echo "$HOSTNAME" > /tmp/HOSTNAME.$$
   sudo rm -f /etc/hostname
@@ -10,7 +14,8 @@ if grep -q $MAC HOSTS; then
   sudo chown root:root /etc/hostname
   sudo chmod 644 /etc/hostname
   sudo /etc/init.d/hostname.sh
+  exit 0
 else
   echo "cannot determine hostname"
+  exit 1
 fi
-exit 1