-bootdev=`device2grub $BOOT_DEVICE`
-bootpart=`device2grub $BOOT_PARTITION`
-version=`$ROOTCMD rpm -qv kernel | cut -d- -f2-`
+bootdev=$(device2grub $BOOT_DEVICE)
+bootpart=$(device2grub $BOOT_PARTITION)
+version=$($ROOTCMD rpm -qv kernel | cut -d- -f2-)