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UNIX System V系のinit→ systemdにより「ランレベル」から「ターゲット」に変更された。
# systemctl get-default graphical.target
System V系のランレベル5
# systemctl list-units --type=target --all --no-pager UNIT LOAD ACTIVE SUB DESCRIPTION basic.target loaded active active Basic System cryptsetup.target loaded active active Encrypted Volumes emergency.target loaded inactive dead Emergency Mode final.target loaded inactive dead Final Step 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-online.target loaded inactive dead Network is Online network.target loaded active active Network (中略) 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. 27 loaded units listed. To show all installed unit files use 'systemctl list-unit-files'.
# 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 get-default multi-user.target
# systemctl isolate graphical.target
| | runlevel | systemdでの変更コマンド | |システム停止 | 0 | systemctl isolate poweroff.target | |シングルユーザモード | 1 | systemctl isolate rescue.target | |マルチユーザモード | 3 | systemctl isolate multi-user.target | |グラフィカルユーザモード | 5 | systemctl isolate graphical.target | |再起動 | 6 | systemctl isolate reboot.target | |緊急モード | - | systemctl isolate emergency.target |
