added a check that fileystem needs expanding before expanding

Author: martim01

documents/pam.sh

@@ -7,6 +7,14 @@ if [ -f "$FILE" ]; then
 else
   InitialSetup
   touch "$FILE"
-  sudo raspi-config --expand-rootfs
+
+  #expand the filesystem
+  PARTSIZE=$( df | sed -n '/root/{s/  */ /gp}' | cut -d ' ' -f2)
+  THRESHOLD=6291456
+  if [ "$PARTSIZE" -lt "$THRESHOLD" ]
+  then
+    raspi-config --expand-rootfs
+  fi
   sudo shutdown -r now
 fi
+