fix ugly error message when killing commands

cmd/ipfs/main.go

@@ -496,22 +496,24 @@ func (i *cmdInvocation) setupInterruptHandler() {
 			case <-ctx.InitDone:
 			}
 
+			switch count {
+			case 0:
+				fmt.Println(shutdownMessage)
+				if ctx.Online {
+					go func() {
 						// TODO cancel the command context instead
-
 						n, err := ctx.GetNode()
 						if err != nil {
 							log.Error(err)
 							fmt.Println(shutdownMessage)
 							os.Exit(-1)
 						}
-
-			switch count {
-			case 0:
-				fmt.Println(shutdownMessage)
-				go func() {
 						n.Close()
 						log.Info("Gracefully shut down.")
 					}()
+				} else {
+					os.Exit(0)
+				}
 
 			default:
 				fmt.Println("Received another interrupt before graceful shutdown, terminating...")