func usageFunc(cmd *cobra.Command) error {
subCommands := getSubCommands(cmd)
tabOut := getTabOutWithWriter(os.Stdout)
commandUsageTemplate.Execute(tabOut, struct {
Cmd *cobra.Command
LocalFlags string
GlobalFlags string
SubCommands []*cobra.Command
Version string
}{
cmd,
rktFlagUsages(cmd.LocalFlags()),
rktFlagUsages(cmd.InheritedFlags()),
subCommands,
version.Version,
})
tabOut.Flush()
return nil
}