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.

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    Not really clear: "*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 *"? What is the command and why these requirements (whatever they are). Is this some kind of homework? – Jacob Vlijm Oct 13 '16 at 8:51
  • @JacobVlijm I have tried with /etc/init.d/ to run the script but it requires to create a symlink to /etc/rc.d/ , but i wanted something like if we place script file in some path it should executed @ startup. – Amruth A Oct 13 '16 at 9:01
  • Startup or log in? – Jacob Vlijm Oct 13 '16 at 16:36
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    @JacobVlijm @ startup – Amruth A Oct 13 '16 at 17:04
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    Stating the init+rc system is important, also. upstart? systemd? runit? nosh? ... – JdeBP Oct 14 '16 at 11:49

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/*
    sudo chmod +x $SCRIPT

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.

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

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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.

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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

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