启动服务：systemctl start xxx.service

关闭服务：systemctl stop xxx.service

重启服务：systemctl restart xxx.service

显示服务的状态：systemctl status xxx.service

在开机时启用服务：systemctl enable xxx.service

在开机时禁用服务：systemctl disable xxx.service

查看服务是否开机启动：systemctl is-enabled xxx.service

查看已启动的服务列表：systemctl list-unit-files|grep enabled

查看启动失败的服务列表：systemctl –failed