Ubuntu安装程序提示无法获得锁

1.问题描述

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?E: 无法获得锁 /var/lib/dpkg/lock-frontend -