使用 systemd 操作 service - 列出所有受管理的項目

cy@cyvm:~$ systemctl status -all
● cyvm
    State: degraded
     Jobs: 0 queued
   Failed: 1 units
    Since: 六 2017-03-18 10:26:53 CST; 7h ago
   CGroup: /
           ├─init.scope
           │ └─1 /sbin/init splash
           ├─system.slice
           │ ├─avahi-daemon.service
           │ │ ├─859 avahi-daemon: running [cyvm.local
           │ │ └─931 avahi-daemon: chroot helpe
           │ ├─vboxadd-x11.service
...

cy@cyvm:~$ systemctl list-unit-files --all
UNIT FILE                                  STATE
proc-sys-fs-binfmt_misc.automount          static
dev-hugepages.mount                        static
dev-mqueue.mount                           static
proc-sys-fs-binfmt_misc.mount              static
sys-fs-fuse-connections.mount              static
sys-kernel-config.mount                    static
sys-kernel-debug.mount                     static
acpid.path                                 enabled
cups.path                                  enabled
systemd-ask-password-console.path          static
systemd-ask-password-plymouth.path         static
systemd-ask-password-wall.path             static
...