scripts/GRMLBASE/38-udev: check for presence of config file.

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/38-udev b/etc/grml/fai/config/scripts/GRMLBASE/38-udev
index 0cad436..a041632 100755 (executable)
--- a/etc/grml/fai/config/scripts/GRMLBASE/38-udev
+++ b/etc/grml/fai/config/scripts/GRMLBASE/38-udev
@@ -19,9 +19,13 @@ STRING='This file was automatically generated by the /lib/udev/write_net_rules'
 #   Unknown net device (/devices/virtio-pci/virtio0/net/eth0) (virtio_net)
 #   SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="XX:XX:XX:XX:XX:XX", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
 # so therefore remove such an automatically generated file instead.
-if grep -q "$STRING" "$CONFFILE" ; then
-   echo "Automatically generated /etc/udev/rules.d/70-persistent-net.rules found, removing it."
-   rm -f "$CONFFILE"
+if ! [ -r "$CONFFILE" ] ; then
+   echo "$CONFFILE does not exist, nothing to do."
+else
+   if grep -q "$STRING" "$CONFFILE" ; then
+      echo "Automatically generated /etc/udev/rules.d/70-persistent-net.rules found, removing it."
+      rm -f "$CONFFILE"
+   fi
 fi
 
 ## END OF FILE #################################################################