Die gracefully if the supplied input file is not there.
Die gracefully if the supplied input file is not there.

nicholasmalaya/grins,vikramvgarg/grins,nicholasmalaya/grins,vikramvgarg/grins,cahaynes/grins,vikramvgarg/grins,cahaynes/grins,vikramvgarg/grins,nicholasmalaya/grins,nicholasmalaya/grins,cahaynes/grins,vikramvgarg/grins,vikramvgarg/grins,cahaynes/grins,cahaynes/grins,cahaynes/grins