In this video, you will learn how to change the boring default Ubuntu desktop appearance to look presentable
command for moving show application icon:
gsettings set org.gnome.shell.extensions.dash-to-dock show-apps-at-top true.
command for shortening and centring the Dock:
gsettings set org.gnome.shell.extensions.dash-to-dock extend-height false
command for changing transparency mode to Fixed:
gsettings set org.gnome.shell.extensions.dash-to-dock transparency-mode FIXED
command for changing the opacity to 0.0:
gsettings set org.gnome.shell.extensions.dash-to-dock background-opacity 0.0