From 96da45309586794612d1133c37bcfb328606f144 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Krzysztof=20Skrz=C4=99tnicki?=
 <krzysztof.skrzetnicki@goteleport.com>
Date: Wed, 16 Mar 2022 11:22:36 +0100
Subject: [PATCH] Show usage on invalid command line invocation.

---
 tool/tbot/main.go                | 1 +
 tool/tctl/common/tctl.go         | 1 +
 tool/teleport/common/teleport.go | 1 +
 tool/tsh/tsh.go                  | 1 +
 4 files changed, 4 insertions(+)

diff --git a/tool/tbot/main.go b/tool/tbot/main.go
index 9fbf339d00778..ee600398c4c33 100644
--- a/tool/tbot/main.go
+++ b/tool/tbot/main.go
@@ -107,6 +107,7 @@ func Run(args []string) error {
 
 	command, err := app.Parse(args)
 	if err != nil {
+		app.Usage(args)
 		return trace.Wrap(err)
 	}
 
diff --git a/tool/tctl/common/tctl.go b/tool/tctl/common/tctl.go
index 83346dba36700..ea7c8855eeb47 100644
--- a/tool/tctl/common/tctl.go
+++ b/tool/tctl/common/tctl.go
@@ -139,6 +139,7 @@ func Run(commands []CLICommand) {
 	// parse CLI commands+flags:
 	selectedCmd, err := app.Parse(os.Args[1:])
 	if err != nil {
+		app.Usage(os.Args[1:])
 		utils.FatalError(err)
 	}
 
diff --git a/tool/teleport/common/teleport.go b/tool/teleport/common/teleport.go
index 09aa21f954fb9..b159fb3be750c 100644
--- a/tool/teleport/common/teleport.go
+++ b/tool/teleport/common/teleport.go
@@ -296,6 +296,7 @@ func Run(options Options) (app *kingpin.Application, executedCommand string, con
 	// parse CLI commands+flags:
 	command, err := app.Parse(options.Args)
 	if err != nil {
+		app.Usage(options.Args)
 		utils.FatalError(err)
 	}
 
diff --git a/tool/tsh/tsh.go b/tool/tsh/tsh.go
index 282622c9bd81a..ea0dd23080474 100644
--- a/tool/tsh/tsh.go
+++ b/tool/tsh/tsh.go
@@ -626,6 +626,7 @@ func Run(args []string, opts ...cliOption) error {
 	// parse CLI commands+flags:
 	command, err := app.Parse(args)
 	if err != nil {
+		app.Usage(args)
 		return trace.Wrap(err)
 	}