ubuntu无法对状态列表目录加锁的解决

weiji@weiji-desktop:~$ sudo apt-get update
E: 无法获得锁 /var/lib/apt/lists/lock - open (11 Resource temporarily unavailable)
E: 无法对状态列表目录加锁
weiji@weiji-desktop:~$ sudo apt-get dist-upgrad
E: 无效的操作 dist-upgrad

sudo rm /var/lib/apt/lists/lock就好了。