Restart Xfce panel in Xubuntu
To restart the panel, open the terminal and run the following command:
xfce4-panel -r
Your changes should be visible now.
The -r
option stands for restart, as described in the man page:
-r, --restart
Restart the running panel instance
(Source: http://manpages.org/xfce4-panel)
Sometimes I find that, xfce panel is gone. Therefore I need to restart the panel.
Above restart process do not work 100%. In my system, it cannot initialize session-buttons and other add-on(s).
To complete panel restart, just open the task manager and kill the xfce4-panel process. Don't worry. System will restart the panel just after is has been killed.