if o.uploadCodeServer != "" {
		flog.Info("uploading local code-server binary...")
		err = copyCodeServerBinary(o.sshFlags, host, o.uploadCodeServer, codeServerPath)
		if err != nil {
			return xerrors.Errorf("failed to upload local code-server binary to remote server: %w", err)
		}

		sshCmdStr :=
			fmt.Sprintf("ssh %v %v 'chmod +x %v'",
				o.sshFlags, host, codeServerPath,
			)

		sshCmd := exec.Command("sh", "-l", "-c", sshCmdStr)
		sshCmd.Stdout = os.Stdout
		sshCmd.Stderr = os.Stderr
		err = sshCmd.Run()
		if err != nil {
			return xerrors.Errorf("failed to make code-server binary executable:\n---ssh cmd---\n%s: %w",
				sshCmdStr,
				err,
			)
		}
	} else {
		flog.Info("ensuring code-server is updated...")
		dlScript := downloadScript(codeServerPath)

		// Downloads the latest code-server and allows it to be executed.
		sshCmdStr := fmt.Sprintf("ssh %v %v '/usr/bin/env bash -l'", o.sshFlags, host)

		sshCmd := exec.Command("sh", "-l", "-c", sshCmdStr)
		sshCmd.Stdout = os.Stdout
		sshCmd.Stderr = os.Stderr
		sshCmd.Stdin = strings.NewReader(dlScript)
		err = sshCmd.Run()
		if err != nil {
			return xerrors.Errorf("failed to update code-server:\n---ssh cmd---\n%s"+
				"\n---download script---\n%s: %w",
				sshCmdStr,
				dlScript,
				err,
			)
		}
	}