cmd/p2psim: add exit error output and exit code (ethereum#17116)

terasum · firmianavan · commit 7adb06dc21e8 · 2018-08-28T15:27:50.000+08:00
diff --git a/cmd/p2psim/main.go b/cmd/p2psim/main.go
@@ -180,7 +180,10 @@ func main() {
 			},
 		},
 	}
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
 }
 
 func showNetwork(ctx *cli.Context) error {

Original file line number	Diff line number	Diff line change
`@@ -180,7 +180,10 @@ func main() {`
`180`	`180`	`},`
`181`	`181`	`},`
`182`	`182`	`}`
`183`		`- app.Run(os.Args)`
	`183`	`+ if err := app.Run(os.Args); err != nil {`
	`184`	`+ fmt.Fprintln(os.Stderr, err)`
	`185`	`+ os.Exit(1)`
	`186`	`+ }`
`184`	`187`	`}`
`185`	`188`
`186`	`189`	`func showNetwork(ctx *cli.Context) error {`