6 while [[ $# != 0 && $1 == -* ]]; do
 
  11     (b*)    man btrfs-balance          ;;
 
  12     (c*)    man btrfs-check            ;;
 
  13     (d*)    man btrfs-device           ;;
 
  14     (f*)    man btrfs-filesystem       ;;
 
  15     (im*)   man btrfs-image            ;;
 
  16     (in*)   man btrfs-inspect-internal ;;
 
  17     (m*)    man btrfs-map-logical      ;;
 
  18     (p*)    man btrfs-property         ;;
 
  19     (q*)    man btrfs-qgroup           ;;
 
  20     (q*)    man btrfs-quota            ;;
 
  21     (rec*)  man btrfs-receive          ;;
 
  22     (rep*)  man btrfs-replace          ;;
 
  23     (resc*) man btrfs-rescue           ;;
 
  24     (rest*) man btrfs-restore          ;;
 
  25     (sc*)   man btrfs-scrub            ;;
 
  26     (se*)   man btrfs-send             ;;
 
  27     (su*)   man btrfs-subvolume        ;;