How to run a shell script at startup?

Question

I’m running two scripts called start_my_app and stop_my_app on my Amazon S3 Linux instance. These scripts manually start and stop my Node.js application. But I want my start_my_app to run when the system boots up. Can anyone tell me how to do it?

Answer 1

Create  a init.d file and add  /etc/init.d/ and set it to executable like below: 

chmod +x /etc/init.d/start_my_app

You can create a symlink to  /etc/init.d/ if the above doesn’t run: 

ln -s /etc/init.d/start_my_app /etc/rc.d/

To avoid any unexpected errors, put the absolute path of your script like below and add #!/bin/sh on top of the file:

/var/myscripts/start_my_app

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