Install ruby-numru-units by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-numru-units
Description:
Ruby class library to handle units of physical quantities
Numru-units is a class to handle units of physical quantities. It covers most functionality of UNIDATA's UDUNITS Library (http://www.unidata.ucar.edu/packages/udunits), however, with a more sophisticated handling of string expressions.
Homepage: http://ruby.gfd-dennou.org/products/numru-units
Version: 1.9.0-1
Section: universe/ruby