Restart / Update init Configuration File /etc/inittab After Changes Without Rebooting Server

Q. I’ve made changes / updates to my /etc/inittab file to configure init process to start with agetty. init reads the /etc/inittab configuration file at the time of system boot. How do I re-read this file without rebooting my Linux server?

A. You need to send HUP single to init process to re-read /etc/inittab on fly using kill command. This is the only way to avoid reboot and make changes to the init configuration take effect immediately.

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kill command to send HUP single

Type the command as follows after updating /etc/inittab, enter:
# kill -HUP 1
Please note that init runs as a daemon and typically always has PID 1 on many UNIX / Linux like systems.

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7 comments… add one
  • Gokdeniz Karadag Jun 25, 2008 @ 13:04

    The more robust way to do this is to use
    telinit q

  • santhosh kumar theyyan Jun 26, 2008 @ 12:49

    init q should do the same

  • franklin Aug 30, 2008 @ 14:01

    hai
    In redhat os we have already configured with runlevel 5 but automatically goes to single usermode
    plz ans anyone

  • kevin Aug 30, 2011 @ 3:05

    init audio device fails to run , anyone can tell me what i may do to fix this

  • bhaskar Aug 11, 2013 @ 7:44

    hi i done changes in runlevel 3 to 5 in /etc/inittab file.
    after rebooting my pc is not booting

  • Hakim Sep 9, 2013 @ 2:33

    Hi all…
    i’ve got the same problem, after installing RHEL 5 i to dell PE 1750 server for testing, it only boot to CLi and no GUI, i run startx it goes to GUI but after i reboot the server it goes to CLI again, somebody can help me through this problem… I just migrate from wintel team to unix team at my company, still have a lot to learn

  • Tarunika Shrivastava Sep 22, 2014 @ 5:52

    Its not working.

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