conky is a light-weight system monitor, which it draws the system information with text, lines and dots. conky allows customization, in fact it is a drawing block that prepare for you to configure. Put all your settings into ~/.conkyrc.
Conky configuration is actually separate into two parts, one is general settings which covers the position, what fonts to use, font size, padding, background etc. Another one is what system info you want to display. It will display exactly what you have defined.
Lets look at some example configurations: