9.3. Travailler avec des cibles Systemd

systemctl get-default

~]$ systemctl get-default
graphical.target

systemctl list-units --type target

~]$ systemctl list-units --type target
UNIT                  LOAD   ACTIVE SUB    DESCRIPTION
basic.target          loaded active active Basic System
cryptsetup.target     loaded active active Encrypted Volumes
getty.target          loaded active active Login Prompts
graphical.target      loaded active active Graphical Interface
local-fs-pre.target   loaded active active Local File Systems (Pre)
local-fs.target       loaded active active Local File Systems
multi-user.target     loaded active active Multi-User System
network.target        loaded active active Network
paths.target          loaded active active Paths
remote-fs.target      loaded active active Remote File Systems
sockets.target        loaded active active Sockets
sound.target          loaded active active Sound Card
spice-vdagentd.target loaded active active Agent daemon for Spice guests
swap.target           loaded active active Swap
sysinit.target        loaded active active System Initialization
time-sync.target      loaded active active System Time Synchronized
timers.target         loaded active active Timers

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

17 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.

systemctl set-default multi-user.target

~]# systemctl set-default multi-user.target
rm '/etc/systemd/system/default.target'
ln -s '/usr/lib/systemd/system/multi-user.target' '/etc/systemd/system/default.target'

systemctl isolate multi-user.target

~]# systemctl isolate multi-user.target

systemctl rescue

~]# systemctl rescue

Broadcast message from root@localhost on pts/0 (Fri 2013-10-25 18:23:15 CEST):

The system is going down to rescue mode NOW!

systemctl --no-wall emergency

~]# systemctl --no-wall emergency