Use a *println or *print function instead of *printf where appropriate.

commands.go

@@ -146,12 +146,12 @@ func (srv *Server) CmdLogin(stdin io.ReadCloser, stdout io.Writer, args ...strin
 	newAuthConfig := auth.NewAuthConfig(username, password, email, srv.runtime.root)
 	status, err := auth.Login(newAuthConfig)
 	if err != nil {
-		fmt.Fprintf(stdout, "Error : %s\n", err)
+		fmt.Fprintln(stdout, "Error:", err)
 	} else {
 		srv.runtime.authConfig = newAuthConfig
 	}
 	if status != "" {
-		fmt.Fprintf(stdout, status)
+		fmt.Fprint(stdout, status)
 	}
 	return nil
 }
@@ -207,7 +207,7 @@ func (srv *Server) CmdInfo(stdin io.ReadCloser, stdout io.Writer, args ...string
 	if !rcli.DEBUG_FLAG {
 		return nil
 	}
-	fmt.Fprintf(stdout, "debug mode enabled\n")
+	fmt.Fprintln(stdout, "debug mode enabled")
 	fmt.Fprintf(stdout, "fds: %d\ngoroutines: %d\n", getTotalUsedFds(), runtime.NumGoroutine())
 	return nil
 }
@@ -369,7 +369,7 @@ func (srv *Server) CmdHistory(stdin io.ReadCloser, stdout io.Writer, args ...str
 	}
 	w := tabwriter.NewWriter(stdout, 20, 1, 3, ' ', 0)
 	defer w.Flush()
-	fmt.Fprintf(w, "ID\tCREATED\tCREATED BY\n")
+	fmt.Fprintln(w, "ID\tCREATED\tCREATED BY")
 	return image.WalkHistory(func(img *Image) error {
 		fmt.Fprintf(w, "%s\t%s\t%s\n",
 			srv.runtime.repositories.ImageName(img.ShortId()),
@@ -438,7 +438,7 @@ func (srv *Server) CmdImport(stdin io.ReadCloser, stdout io.Writer, args ...stri
 			u.Host = src
 			u.Path = ""
 		}
-		fmt.Fprintf(stdout, "Downloading from %s\n", u.String())
+		fmt.Fprintln(stdout, "Downloading from", u)
 		// Download with curl (pretty progress bar)
 		// If curl is not available, fallback to http.Get()
 		resp, err = Download(u.String(), stdout)
@@ -564,7 +564,7 @@ func (srv *Server) CmdImages(stdin io.ReadCloser, stdout io.Writer, args ...stri
 	}
 	w := tabwriter.NewWriter(stdout, 20, 1, 3, ' ', 0)
 	if !*quiet {
-		fmt.Fprintf(w, "REPOSITORY\tTAG\tID\tCREATED\tPARENT\n")
+		fmt.Fprintln(w, "REPOSITORY\tTAG\tID\tCREATED\tPARENT")
 	}
 	var allImages map[string]*Image
 	var err error
@@ -647,7 +647,7 @@ func (srv *Server) CmdPs(stdin io.ReadCloser, stdout io.Writer, args ...string)
 	}
 	w := tabwriter.NewWriter(stdout, 12, 1, 3, ' ', 0)
 	if !*quiet {
-		fmt.Fprintf(w, "ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tCOMMENT\n")
+		fmt.Fprintln(w, "ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tCOMMENT")
 	}
 	for _, container := range srv.runtime.List() {
 		if !container.State.Running && !*flAll {

container.go

@@ -458,8 +458,8 @@ func (container *Container) Stop() error {
 
 	// 1. Send a SIGTERM
 	if output, err := exec.Command("lxc-kill", "-n", container.Id, "15").CombinedOutput(); err != nil {
-		log.Printf(string(output))
-		log.Printf("Failed to send SIGTERM to the process, force killing")
+		log.Print(string(output))
+		log.Print("Failed to send SIGTERM to the process, force killing")
 		if err := container.Kill(); err != nil {
 			return err
 		}

rcli/http.go

@@ -20,7 +20,7 @@ func ListenAndServeHTTP(addr string, service Service) error {
 		func(w http.ResponseWriter, r *http.Request) {
 			cmd, args := URLToCall(r.URL)
 			if err := call(service, r.Body, &AutoFlush{w}, append([]string{cmd}, args...)...); err != nil {
-				fmt.Fprintf(w, "Error: "+err.Error()+"\n")
+				fmt.Fprintln(w, "Error:", err.Error())
 			}
 		}))
 }

rcli/tcp.go

@@ -51,8 +51,8 @@ func ListenAndServe(proto, addr string, service Service) error {
 					CLIENT_SOCKET = conn
 				}
 				if err := Serve(conn, service); err != nil {
-					log.Printf("Error: " + err.Error() + "\n")
-					fmt.Fprintf(conn, "Error: "+err.Error()+"\n")
+					log.Println("Error:", err.Error())
+					fmt.Fprintln(conn, "Error:", err.Error())
 				}
 				conn.Close()
 			}()