You made changes to your /etc/inittab file but can’t effort any downtime.
There’s a simple trick to reload and apply changes in your /etc/inittab file without a reboot.
Run “init q” or “init Q” [root@snoopy ~]# init q
[root@snoopy ~]#
[root@snoopy ~]# init Q
[root@snoopy ~]#