查看
查看系统状态
1 systemctl status
查看单个单元运行状态
1 systemctl status [单元]
查看所有可用单元
1 systemctl list-unit-files
查看开机进程
1 systemd-analyze
查看各个服务启动花费的时间
1 systemd-analyze blame
重新载入systemd并扫描可用单元
1 systemctl daemon-reload
管理服务
启动&停止&重启单元
1 systemctl start [单元] 2 systemctl stop [单元] 3 systemctl restart [单元]
设置/取消单元开机自启，查看单元是否设置为开机自启
1 systemctl enable [单元] 2 systemctl disable [单元] 3 systemctl is-enabled [单元]
禁用/取消禁用单元
1 systemctl mask [单元] 2 systemctl unmask [单元]
原文：http://www.cnblogs.com/riocke7cb/p/6757532.html