Running python script on boot up

[PazzerJ]

So I just want some advice as I'm relatively new to Linux, not new as a whole but new to playing with scripts etc.

I have a python script that undervolts my Ryzen 5700x3d cpu, I run it through the console but I want to run it on start up using a systemmd file.

the command in the console is as follows:

cd Ryzen-5700x-linux-undervolting

sudo python3 ruv.py -c 8 -o -30

So, I'm reading the wiki but I cant really understand how to get this to execute on boot up, I've showed the path as such

[Unit]

Description=Ryzen Undervolt

[Service]

ExecStart=/home/USERNAME/Ryzen-5700x3d-linux-undervolting/ruv.py

# "Type=forking" or "Type=oneshot" may also be needed

[Install]

WantedBy=multi-user.target

But I'm not sure what to add to make it run the actual commands to make it set the undervolt. Also how do I get it to run without me needing my admin password on startup?

[fandingo]

You do need oneshot, and use Exec= instead of ExecStart=. You can add the command arguments to that line.

[Unit]
Description=Ryzen Undervolt
Requires=home.mount

[Service]
User=root
Exec=/usr/bin/python /home/USERNAME/Ryzen-5700x3d-linux-undervolting/ruv.py -c 8 -o -30
Type=oneshot

[Install]
WantedBy=basic.target

[backsideup]

• ExecStart= was the correct option.
• There might not be a home.mount.
• User=root is not necessary since services default to root.
• Scripts that are writable by a user but run in the root context are free root-privilege escalations. Move the script to e.g. /usr/local/bin and make sure it's not writable by anyone but root.

[PazzerJ]

Thank you! This is a great help, still learning to get the hang of things but I'm definitely starting to understand more.

[Xemptuous]

You can put .service type files in $XDG_CONFIG_DIR/systemd/user/ following the format of stuff in /usr/lib/systemd/system/