Topic 8

Dates: 3/8/2017
Start-up and Run Levels. Scheduled jobs (at, cron)
Linux System Administration


Comparison of SysV Runlevels with systemd Targets


RunlevelTarget UnitsDescription
0 runlevel0.target, poweroff.target Shut down and power off the system.
1 runlevel1.target, rescue.target Set up a rescue shell.
2 runlevel2.target, multi-user.target Set up a non-graphical multi-user system.
3 runlevel3.target, multi-user.target Set up a non-graphical multi-user system.
4 runlevel4.target, multi-user.target Set up a non-graphical multi-user system.
5 runlevel5.target, graphical.target Set up a graphical multi-user system.
6 runlevel6.target, reboot.target Shut down and reboot the system.



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