From f5122893e3d5b63cafd52c98026c432f4c2dc546 Mon Sep 17 00:00:00 2001
From: Sven Rebhan <36194019+srebhan@users.noreply.github.com>
Date: Wed, 25 Jan 2023 15:54:51 +0100
Subject: [PATCH] fix(agent): catch non-existing commands and error out
 (#12549)

---
 cmd/telegraf/main.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/cmd/telegraf/main.go b/cmd/telegraf/main.go
index 95498a2c4..9826d9947 100644
--- a/cmd/telegraf/main.go
+++ b/cmd/telegraf/main.go
@@ -129,8 +129,13 @@ func runApp(args []string, outputBuffer io.Writer, pprof Server, c TelegrafConfi
 	extraFlags := append(pluginFilterFlags, cliFlags()...)
 
 	// This function is used when Telegraf is run with only flags
-
 	action := func(cCtx *cli.Context) error {
+		// We do not expect any arguments this is likely a misspelling of
+		// a command...
+		if cCtx.NArg() > 0 {
+			return fmt.Errorf("unknown command %q", cCtx.Args().First())
+		}
+
 		err := logger.SetupLogging(logger.LogConfig{})
 		if err != nil {
 			return err