An SVG (Scalable Vector Graphics) editing program.
  Use -z to not open the GUI and only process files in the console.

  Open an SVG file in the Inkscape GUI:

      inkscape filename.svg

  Export an SVG file into a bitmap with the default format (PNG) and the default resolution (90 DPI):

      inkscape filename.svg -e filename.png

  Export an SVG file into a bitmap of 600x400 pixels (aspect ratio distortion may occur):

      inkscape filename.svg -e filename.png -w 600 -h 400

  Export a single object, given its ID, into a bitmap:

      inkscape filename.svg -i id -e object.png

  Export an SVG document to PDF, converting all texts to paths:

      inkscape filename.svg | inkscape | inkscape --export-pdf=inkscape.pdf | inkscape | inkscape --export-text-to-path

  Duplicate the object with id="path123", rotate the duplicate 90 degrees, save the file, and quit Inkscape:

      inkscape filename.svg --select=path123 --verb=EditDuplicate --verb=ObjectRotate90 --verb=FileSave --verb=FileQuit

  Some invalid command just to test the correct highlighting of the command name:

      inkscape --use-inkscape=v3.0 file