I would like to execute a program automatically,when power supply at ON.

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1

Hi,

I made TCP client program for Beaglebone Black on Angstrom Linux.

I would like to execute a program automatically,when power supply at ON for connection to server.

I put the execute file here.

/home/a.out

I made a file called myScript.sh on this pass.

/etc/init.d/myScript.sh

It is contents of file myScript.sh

#!/bin/bash
/home/a.out

I executed the following command for file myScript.sh.

chmod u=+rwx myScript.sh

Next, in /etc/rc5.d folder、I executed the command.

ln -s ../init.d/myScript.sh S99myScript

I thought that it can start in this automatically,

but I can’t.

I refer to these contents.

https://[groups.google.com/forum/#!topic/beagleboard/6GmHGPgnY84](http://groups.google.com/forum/#!topic/beagleboard/6GmHGPgnY84)

Would you tell me any your advice thing or solution?

thanks.

2

Hi,

You can put myScript.sh into the /etc/profile.d directory and your script will be executed on startup.

Obviously there’s several ways to do this, but that’s cheap and cheerful.

Regards,

Anthony

3

Hi Anthony,

Thank you for your reply.

I was able to do it.

Thank you so much.

Kenji Maehara

2014年4月24日木曜日 21時01分36秒 UTC+9 cove...@gmail.com:

4

Hello Anthony, it looks like that this method only works if I boot up and ssh to the BBB OS. Do you know of a method that would allow a program to execute once there is power through the BBB (with 5V port not the USB)?

I have been trying to figure this out for a while now. I would really appreciate it if you can provide me with some suggestions on this matter.
Thanks in advance,

Uonsong

5

If you’re using Debian Wheezy, the instructions below are taken from my blog and work. More information here: https://wiki.debian.org/LSBInitScripts

Create some file, and edit it accordingly. In my case test

touch /etc/init.d/test && nano /etc/init.d/test

And in the file we put . . .

#! /bin/sh

### BEGIN INIT INFO
# Provides: test
# Required-Start: $all
# Required-Stop: $all
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Short script description
# Description: Longer script description.
### END INIT INFO
case “$1″ in
start)
/sbin/route add default gw 192.168.0.1 dev eth0
/usr/sbin/ntpdate pool.ntp.org
;;
stop)
#no-op
;;
*)
#no-op
;;
esac

exit 0

Then we must make the file executable, so we issue the command:

chmod +x /etc/init.d/test

Followed by the new method of installing the service. Do note the first command tests the file, and the second command actually installs the file as a service.

insserv -n /etc/init.d/test
insserv /etc/init.d/test

6

NOTE this method knows nothing about when your board has power applied. This servicewill however start every time Debian is booted up. Even from a soft boot / restart.

7

I like using crontab.

use “crontab -e” to edit the cron file and insert a line with something like:

@reboot pathToMyScript

jay