feat(cmd): override help for all commands

Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

pkg/cmd/run.go

@@ -53,17 +53,17 @@ type RunOptions struct {
 	namespace         string
 	explicitNamespace bool
 
-	// Local to this command
+	// Flags local to this command
 	container      string
 	eval           string
 	program        string
-	resourceArg    string
-	attach         bool
-	isPod          bool
-	podUID         string
 	serviceAccount string
 
-	nodeName string
+	resourceArg string
+	attach      bool
+	isPod       bool
+	podUID      string
+	nodeName    string
 
 	clientConfig *rest.Config
 }

pkg/cmd/trace.go

@@ -76,5 +76,18 @@ func NewTraceCommand(streams genericclioptions.IOStreams) *cobra.Command {
 	cmd.AddCommand(NewVersionCommand(streams))
 	cmd.AddCommand(NewLogCommand(f, streams))
 
+	// Override help on all the commands tree
+	walk(cmd, func(c *cobra.Command) {
+		c.Flags().BoolP("help", "h", false, fmt.Sprintf("Help for the %s command", c.Name()))
+	})
+
 	return cmd
 }
+
+// walk calls f for c and all of its children.
+func walk(c *cobra.Command, f func(*cobra.Command)) {
+	f(c)
+	for _, c := range c.Commands() {
+		walk(c, f)
+	}
+}