CentOS 5.11 Startup Script

[Positron]

Hello,

I created two scripts which I run manually after reboot and they work till the next reboot.

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nohup /root/first.sh </dev/null &>/dev/null &
nohup /root/secondary.sh </dev/null &>/dev/null &

But sometimes I forgot to run those two commands after reboot. How can I make those two commands automatically run, like at the startup of the system?

Cheer

[TrevorH]

You either write a proper initscript to run that for you (you can base it off one of the existing scripts in /etc/init.d) or you create an @reboot crontab entry for the user you want to run it. Use man 5 crontab to find out more details.

[gerald_clark]

Or add it to rc.local.

[Positron]

Thanks guys for your help.

I added into crontab as this:

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@reboot bash /root/additional_security.sh start

It works fine now. But on net, I saw that this may not work for "cold startup". I am not sure what "cold startup" is. I am running a CentOS VPS on a hosting company. I did not there is no cold startup for my scenario, right?

Also I am listening netstat and access_log by this script. Do you think it is safe to assume to run this script automatically at the reboot time? Would there be any race condition? I do not check actually if netstat is running or not inside the script, just assuming it is.

Cheers