服务自启动、关闭/开启服务（不推荐阅读）

查看sql-server的状态

sudo systemctl status mssql-server

关闭sql-server

service mssql-server stop

开启

service mssql-server start

systemctl is-enabled servicename.service #查询服务是否开机启动
systemctl enable *.service #开机运行服务
systemctl disable *.service #取消开机运行
systemctl start *.service #启动服务
systemctl stop *.service #停止服务
systemctl restart *.service #重启服务
systemctl reload *.service #重新加载服务配置文件
systemctl status *.service #查询服务运行状态