make sure variable is set

faiproject · May 19, 2020 · 174f6ea · 174f6ea
1 parent 66986ce
commit 174f6ea
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/mkramdisk b/lib/mkramdisk
@@ -53,7 +53,7 @@ umount_ramdisk() {
     # move current ramdisk to a new location
     mount --bind $disk $ram
     umount $disk
-    rm -rf $disk/* $disk/.??* || true
+    rm -rf ${disk:?}/* ${disk:?}/.??* || true
     cp -a  $ram/. $disk/.   # copy ramdisk contents to disk
     umount $ram
     [ X$debug = X1 ]  && echo "Ramdisk on $disk umounted"