the splits

[Ray Andrews <rayandrews@xxxxxxxxxxx>]

    A function of mine might need to unmount
      someting.  If there's a problem I try to be helpful:
      
    
      umount -v "$mountpoint" || 
      {
          # Helpful diagnostics if partition won't unmount:
          echo "\nCan't unmount $mountpoint.  Is a terminal logged on? 
      Or is it one of these programs:?\n(Please wait or press '^C' to
      quit.)"
      
          abc=$(lsof | grep $mountpoint)
          abc=( ${(f)abc} )
          for def in $abc[@]; do ghi=( ${=def} ); print --
      "$ghi[1]\t$ghi[-1]\n"; done
          return
      }        
      
      Typical run:
      
      
      % mnt ,U sda
      
      Unmounting partitions ...
      umount: /mnt/sda/1: target is busy.
      
    Can't unmount /mnt/sda/1.  Is a
      terminal logged on?  Or is it one of these programs:?
      (Please wait or press '^C' to quit.)
    
    zsh      /mnt/sda/1/EFI/BOOT
      geany    /mnt/sda/1/EFI/BOOT
      geany    /mnt/sda/1/EFI/BOOT
      geany    /mnt/sda/1/EFI/BOOT
    
      ----------------------------------------------------
      
      ... works fine but I'll bet:
    
      abc=$(lsof | grep $mountpoint)
      abc=( ${(f)abc} )
      for def in $abc[@]; do ghi=( ${=def} ); print --
      "$ghi[1]\t$ghi[-1]\n"; done
    
      ... is belabored.   Can that be streamlined?  As always my
      splitting is a problem.  I need to process line by line, but then
      word by word so as to grab just the first and last words from
      'lsof' output.  I'll bet Roman can do all of the above in 20
      characters.