ubuntu 无法获得锁的解决
在输入sudo apt-get update后发现终端提示：
E: 无法获得锁 /var/lib/dpkg/lock-frontend - open (11: 资源暂时不可用)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
解决方案一：
先找到占用所的进程
ps -e | grep apt
#或
ps aux | grep apt
然后执行：sudo kill 进程号
解决方案二：
有一种情况是
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock
但我遇到的情况是：E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock-frontend