# ls -l /etc/systemd/system/default.target (OR)
# ls -la /usr/lib/systemd/system/default.target
# lrwxrwxrwx 1 root root 16 Jul 8 2021 /usr/lib/systemd/system/default.target -> graphical.target
# systemctl list-units --type target
# list all loaded units in any state #
systemctl list-units --type target --all
Systemd target Runlevel Description Old command
runlevel0.target, poweroff.target 0 Power off the Linux box. init 0
runlevel1.target, rescue.target 1 Boot into emergency rescue mode (single user mode). init 1
runlevel2.target, multi-user.target 2 Text based multi-user system that no network init 2
runlevel3.target, multi-user.target 3 Starts the system normally in multi-user text mode init 3
runlevel4.target, multi-user.target 4 For special purposes text mode. init 4
runlevel5.target, graphical.target 5 Same as runlevel 3 and boot into GUI display manager. init 5
runlevel6.target, reboot.target 6 Reboot the Linux desktop or laptop. init 5
systemd isolate to the new command X.target
How to boot in to rescue mode
sudo systemctl rescue
Switch to different systemd target unit in session:
systemctl isolate multi-user.target
# Or to change GFX mode:
systemctl isolate graphical.target
