what is the function of /etc/init.d file

The /etc/init.d folder contains all stop/start scripts for services on Linux distributions.
Yes, you can simply place a script on the directory for it to execute at bootup.

HTH.

Please teach me how a single shell script add in init.d ?

On Sat, Apr 10, 2010 at 4:00 PM, Ian Ace A. Culallad <
<email address hidden>> wrote:

> Your question #106983 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/106983
>
> Status: Open => Answered
>
> Ian Ace A. Culallad proposed the following answer:
> The /etc/init.d folder contains all stop/start scripts for services on
> Linux distributions.
> Yes, you can simply place a script on the directory for it to execute at
> bootup.
>
> HTH.
>
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--
------with regards,

                      Aneesh.T.V
                      Mob:9544067525

Say you create a script named my_script.sh in /etc/init.d directory:

gksudo gedit /etc/init.d/my_script.sh

- A window will appear for you to input the source of which the script will use to execute. Save file after you're done.
- Make it executable:

sudo chmod +x /etc/init.d/my_script.sh

- Initialize it:

update-rc.d /etc/init.d/my_script.sh defaults

- Now the script will autoexecute at startup.

HTH.

Websearch found some examples.
http://www.debian-administration.org/article/Making_scripts_run_at_boot_time_with_Debian
http://tldp.org/LDP/LG/issue49/misc/beekmans/LFS-HOWTO-10.html

Future target, replacement.
http://upstart.ubuntu.com/