How to run a command automaticly on starting up with systemd

Hi,
I'm using a laptop with two video card, an ATI 3400 and a intel integrated video card.
Several months ago, I use rc.local to disable the ATI 3400 with the command below:
mount -t debugfs debugfs /sys/kernel/debug
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
What should I do to enable these commands with systemd?
Thank You!

brain0 wrote:
yumtaoist wrote:
nomorewindows wrote:Make a .service file and make sure that systemd calls it.
I have write a video.service file like below
[Unit]
Description=Disable the Discrete Graphics
Requires=sys-kernel-debug.mount
After=sys-kernel-debug.mount
[Service]
Type=oneshot
ExecStart=echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
And the result of "systemctl is-enabled video.service" is static
However, this just does not work. I'm not familiar with systemd.
Buy the way, thank you!
First of all, put this into /etc/systemd/system/. Then add an install section to this unit:
[Install]
WantedBy=multi-user.target
or
[Install]
WantedBy=basic.target
(No idea which one is better). Then run:
# systemctl daemon-reload
# systemctl enable video.service
Last edited by brain0 (2012-10-27 20:09:25)

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