rem: printf("usage: %s <path-to-volume>\n", gProgramName);
add: printf("usage: %s [-nfe] <path-to-volume>\n" "\t-n\tdo not modify anything, just check\n" "\t-f\tdon't do anything right now, provided just for compatibility\n" "\t-e\tfix other fixable errors\n", gProgramName);
context: printUsage(){	printf("usage: %s <path-to-volume>\n", gProgramName);}