E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)

ubuntuのupdateで以下のエラー

E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)

E: Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

（１）lockファイルの削除

$sudo rm /var/lib/apt/lists/lock

（２）キャッシュファイルの削除

$sudo rm /var/cache/apt/archives/lock

　$sudo rm /var/lib/dpkg/lock