example: add update-grub button

modules/example_module/example_module.yml

@@ -163,6 +163,14 @@
             lower: 0
             step: 1
             digits: 0
+    - name: "Actions"
+      weight: 10
+      page: "Boot"
+      type: custom
+      settings:
+        - name: Update GRUB
+          type: button
+          set_command: "pkexec /usr/sbin/update-grub 2>&1 | sed 's/:/-/g' | while read line; do echo \"NOTIFY:$line\"; done"
     - name: "Main"
       weight: 0
       page: "Dirs"