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--- linux:init-systems [2023/08/20 14:34] – created gsys
+++ linux:init-systems [2025/04/09 13:06] (current) – [Commands] gsys
@@ Line 1: / Line 1: @@
 ====== Init Systems ======
+<code>
+who -r ctl start                       # get current runlevel
+sudo runlevel                          # get current runlevel
+</code>
 ===== systemd =====
+==== config files ====
+<code>
+ls -al /lib/systemd/system/runlevel*
+</code>
 ==== Commands ====
 <code>
-systemctl status grpwise.service       # show status of service grpwise
+systemctl start grpwise.service          # start service grpwise
-systemctl disable grpwise.service      # remove service grpwise
+systemctl stop grpwise.service           # stop service grpwise
+systemctl status grpwise.service         # show status of service grpwise
+systemctl enable grpwise.service         # enable service grpwise
+systemctl disable grpwise.service        # disable service grpwise
+systemctl get-default                    # get default runlevel
+systemctl set-default multi-user.target  # set gui as default (runlevel 3)
+systemctl set-default graphical.target   # set cli as default (runlevel 5)
+systemctl isolate graphical.target       # switch to gui
+systemctl isolate multi-user.target      # switch to cli
+systemctl reboot                         # reboot (runlevel 6)
+systemctl poweroff                       # shutdown (runlevel 0)
 </code>
-===== System V =====
+===== sysvinit =====
 ==== Commands ====
 <code>
 chkconfig --list grpwise               # list runlevel of service grpwise
+chkconfig --add grpwise                # add service grpwise to all runlevels
+chkconfig --del grpwise                # remove service grpwise from all runlevels
+chkconfig --level 235 grpwise on       # enable service grpwise on runlevels 2,3,5
+chkconfig --level 235 grpwise off      # disable service grpwise on runlevels 2,3,5
 </code>