who -r ctl start                       # get current runlevel
sudo runlevel                          # get current runlevel

ls -al /lib/systemd/system/runlevel*

systemctl start grpwise.service        # start service grpwise
systemctl stop grpwise.service         # stop service grpwise
systemctl status grpwise.service       # show status of service grpwise
systemctl disable grpwise.service      # remove service grpwise
systemctl get-default                  # get default runlevel

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