mapnik-render -V (return code: 1)
version 3.0.11
mapnik-render --help (return code: 1)
mapnik-render utility:
-h [ --help ] produce usage message
-V [ --version ] print version string
-v [ --verbose ] verbose output
--open automatically open the file after rendering (os x only)
--xml arg xml map to read
--img arg image to render
--scale-factor arg scale factor for rendering
--variables make map parameters available as render-time variables