Linux安装mysql客户端时报错：E: Package ‘mariadb-client-core-10.3‘ has no installation candidate

Linux安装mysql客户端时报错：E: Package 'mariadb-client-core-10.3' has no installation candidate

网上找的解决办法（https://blog.youkuaiyun.com/pl19920614/article/details/53966217/）：

 

$ apt-get update
$ apt-get upgrade
$ apt-get install packagename

但是仍旧报错

报错信息很明显，E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)，意思是权限不够，通过以下命令对相应文档进行授权，

zgj@ZGJ:/var/lib/dpkg$
zgj@ZGJ:/var/lib/dpkg$ chmod 777 lock-frontend

再执行上面三条命令即可。

$ apt-get update
$ apt-get upgrade
$ sudo apt-get install packagename