systemctl list-units --type=service --all

列出所有service类型的unit
systemctl list-units --type=service --all

systemctl 列出所有的系统服务
systemctl list-units 列出所有启动unit
systemctl list-unit-files 列出所有启动文件
systemctl list-units –type=service –all 列出所有service类型的unit
systemctl list-units –type=service –all grep cpu 列出 cpu电源管理机制的服务
systemctl list-units –type=target –all 列出所有target

systemctl list-dependencies #查看当前运行级别target(mult-user)启动了哪些服务

参考：http://www.jianshu.com/p/c56f30513651