linux执行：apt-get update命令报错：无法获得锁 /var/lib/apt/lists/lock - open (11: 资源暂时不可用)

错误描述：执行sudo apt-get update

结果显示：无法获得锁 /var/lib/apt/lists/lock - open (11: 资源暂时不可用)
                     无法对目录 /var/lib/apt/lists/ 加锁

解决办法如下：执行命令sudo rm /var/lib/apt/lists/lock