eu-ar --version (return code: 0)
eu-ar (elfutils) 0.170
Copyright (C) 2017 The elfutils developers <http://elfutils.org/>.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
eu-ar -HELP (return code: 64)
eu-ar: unrecognized option '--HELP'
Try `eu-ar --help' or `eu-ar --usage' for more information.