Install xosd-bin by entering the following commands in the terminal:
sudo apt update sudo apt install xosd-bin
Description:
X On-Screen Display library - binary files
This package contains binary files shipped with the X OSD library: osd_cat - a 'cat' like program which will display its output in an OSD-like window
Homepage: http://libxosd.sourceforge.net/
Version: 2.2.14-2.1build1
Section: universe/x11