Labrat is a linux command-line program for quickly printing labels. Labrat uses the wonderful Prawn gem to generate PDF files with label formatting in mind. With labrat properly configured, printing a label is as simple as: $ labrat 'Income Taxes 2021++Example Maker, Inc.' And you will get a two-line file-folder label with the text centered. It can print on dymo label printer rolls or Avery sheet labels. It knows the layout of most Avery label types. For Emacs users, labrat includes elisp code for invoking labrat from within a buffer, providing a quick way to print labels.