I'd like to make a firstboot script for CentOS 5/6 and Ubuntu 12.04/12.10/14.04. If possible, I'd like to use one method to trigger this script to run.

From what I can tell, this rules out chkconfig, firstboot file, upstarts jobs, etc. I'm a bit confused with the plethora of terminology/technology. Is there one method I can use for all these platforms that will run a small script on first boot (after other services is fine)?


You could use /etc/rc.local, it is present on all of the systems you mention. It is executed after all of the other initialisation scripts, see the comments in the file for more information.

  • Perfect! I noticed that /etc/rc.local is a symlink on CentOS, and for my purpose I had to update the original file at (etc/rc.d/rc.local)
    – Hamy
    Jul 2 '14 at 18:58

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