{ "file", 'f', POPT_ARG_STRING, NULL, 'f', "File where to store results", "filename"},
{ "histogram", 'h', POPT_ARG_STRING, NULL, 'h', "Store histogram in file", "filename"},
{ "length", 'l', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.length, 0, "The length of generated messages", "bytes"},
{ "file", 'f', POPT_ARG_STRING, NULL, 'f', "File where to store results", "filename"},
{ "histogram", 'h', POPT_ARG_STRING, NULL, 'h', "Store histogram in file", "filename"},
{ "length", 'l', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.length, 0, "The length of generated messages", "bytes"},