Could not get lock /var/lib/dpkg/lock-frontend解决

在安装软件包时如果出现Could not get lock /var/lib/dpkg/lock-frontend，说明之前使用apt时出现异常，没有正常关闭，还在运行。

lgj@lgj-Lenovo-G470:~$ sudo apt-get install alien
[sudo] password for lgj:
E: Could not get lock /var/lib/dpkg/lock-frontend - open (: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

解决，使用ps 和 grep查找apt的pid,并使用kill杀死掉。

lgj@lgj-Lenovo-G470:~$  ps afx|grep apt
 ?        S      :  \_ sudo apt install rpm
 ?        S      :  |   \_ apt install rpm
 pts/    S+     :          \_ grep --color=auto apt
lgj@lgj-Lenovo-G470:~$ kill
bash: kill: () - Operation not permitted
lgj@lgj-Lenovo-G470:~$ sudo kill
lgj@lgj-Lenovo-G470:~$ sudo kill 

执行安装指令

lgj@lgj-Lenovo-G470:~$ sudo apt-get install alien
E: Could not get lock /var/lib/dpkg/lock - open (: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

如果仍然出现，需要手动删除 /var/lib/dpkg/lock即可。

lgj@lgj-Lenovo-G470:~$ rm -rf /var/lib/dpkg/lock