Install Gnome shell system monitor extension (indicator)

I installed it on ubuntu 17.10 (with gnome shell):

• sudo apt-get install gir1.2-gtop-2.0 gir1.2-networkmanager-1.0 gir1.2-clutter-1.0
• Download the ZIP/Tarball, extract the archive
• make install
• mkdir ~/git_projects
• cd ~/git_projects
• git clone git://github.com/paradoxxxzero/gnome-shell-system-monitor-applet.git
• mkdir -p ~/.local/share/gnome-shell/extensions
• cd ~/.local/share/gnome-shell/extensions
• ln -s ~/git_projects/gnome-shell-system-monitor-applet/system-monitor@paradoxxx.zero.gmail.com
• gnome-shell-extension-tool --enable-extension=system-monitor@paradoxxx.zero.gmail.com
• REBOOT the computer!

Source: ​https://github.com/paradoxxxzero/gnome-shell-system-monitor-applet