Without knowing you Pi setup it's a bit difficult. But with the assumption you're running raspbian with its default "desktop" mode:
- Open a terminal on your Pi, either by
ssh
ing to it or connecting a monitor/keyboard.
- First we need to allow you to login automatically, so
sudo nano /etc/inittab
to open the inittab for editing.
- Find the line
1:2345:respawn:/sbin/getty 115200 tty1
and change it to #1:2345:respawn:/sbin/getty 115200 tty1
- Under that line, add
1:2345:respawn:/bin/login -f pi tty1 </dev/tty1 >/dev/tty1 2>&1
. Type Ctrl+O and then Ctrl+X to save and exit
- Next, we can edit the rc.local.
sudo nano /etc/rc.local
- Add a line
su -l pi -c startx
(replacing pi
with the username you want to launch as) above the exit 0
line. This will launch X on startup, which allows other applications to use graphical interfaces.
- Add the command you'd like to run below the previous line (e.g
python /path/to/mycoolscript.py &
), but still above the exit 0
line.
Note the &
included here. This "forks" the process, allowing other commands to run even if your script hasn't exited yet. Ctrl+O and Ctrl+X again to save and exit.
Now when you power on your Pi, it'll automatically log in, start X, and then launch the python script you've written!
Also, my program requires an internet connection on execution but pi connects to wifi later and my script executes first and ends with not connecting to the internet.
This should be solved in the script itself. Create a simple while
loop that checks for internet access, waits, and repeats until the wifi connects.
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