this script was taken from askubuntu and official manjaro forum.

This is great to close all windows opened but at the same time all you dont..
first check all windows you dont intend to be closed doing this in terminal
wmctrl -l

if you dont have wmctrl installed you can pick up on pkgs.org

edit the script and change cinnamon-panel by your desktop panel name
add either the intended window to not be closed as for example of mine ... Docky

you can put on panel as command launcher

DOWNLOAD SCRIPT
https://drive.google.com/open?id=18tWjJVxat6Q2vg9FNxu94qa4D-0dSXul
DOWNLOAD ICON
https://drive.google.com/open?id=1LM_U3jn25Dq3A-efUwu5rI8cL6hL3qoC