How to execute script file at startup without requiring any commands to be executed at beginning to set it up like chmod , ln -s with etc/rc.d or any other command ?

The script file should be executed at startup by just placing the script in some path.

4 Answers

Interesting question. Thanks for pointing out files in /etc/rc0.d you learn something new every day!

Create directory to drop your scripts into

First you need to create a directory of scripts you want automatically run at startup. I would suggest creating it within /usr/local/bin but it can be anywhere:

sudo mkdir /usr/local/bin/startup-scripts

Modify rc.local to run all your scripts

Then type gksu gedit /etc/rc.local to edit the startup script that has sudo powers.

Before the last line that says exit 0 copy and paste these lines:

for SCRIPT in /usr/local/bin/startup-scripts/*
do sudo chmod +x $SCRIPT $SCRIPT
done

Optionally, for every script in the startup-scripts directory, I would put in something like:

echo "running script xyz within /usr/local/bin/startup-scripts"

as this message will appear in /var/log/syslog file and document your system setup.

You can try to put the command in /etc/rc.local. Just add the command or the script path before 'exit' line.

Easy. Edit the /etc/environment file (with admin priveleges using sudo of course) and append the directory containing your script(s) to your system path. Then, at least in Ubuntu, it's a piece of cake: type Startup Applications in the search bar and just add a new entry in the popup with the name of the script. Reboot and the magic will happen.

You could add a crontab @reboot to run the script, it should work with any init system.

As root :

crontab -e

@reboot /path/to/your/script