code: func printRacks(tsv bool, racks ...*crimson.Rack) {
  	if len(racks) > 0 {
  		p := newStdoutPrinter(tsv)
  		defer p.Flush()
  		if !tsv {
  			p.Row("Name", "Datacenter", "Description", "State", "KVM")
  		}
  		for _, r := range racks {
  			p.Row(r.Name, r.Datacenter, r.Description, r.State, r.Kvm)
  		}
  	}
  }
docs: // printRacks prints rack data to stdout in tab-separated columns.