sudo service mysql start
mysql启动异常
root@Ubuntu:~# sudo service mysql start
Job for mysql.service failed because the control process...
Ubuntu更新python3
要在Ubuntu 18.04 LTS（Bionic Beaver）系统中将Python 3.5升级到Python 3.8，请按照以下步骤操作：
步骤1：启用 Universe 仓库（如果尚未启用）...