printf("vbig - create or verify a large but pseudo-random file\n"
"\n"
"Usage:\n"
- " vbig [--seed SEED] --verify|--create PATH [SIZE]\n"
+ " vbig [OPTIONS] [--both|--verify|--create] PATH] [SIZE]\n"
"\n"
"Options:\n"
" --seed, -s Specify random seed as string\n"
" --seed-length, -L Set (maximum) seed length to read from file\n"
" --verify, -v Verify that PATH contains the expected contents\n"
" --create, -c Create PATH with psuedo-random contents\n"
+ " --both, -b Do both create and verify (default)\n"
" --flush, -f Flush cache\n"
" --entire, -e Write until full; read until EOF\n"
" --progress, -p Show progress as we go\n"