[Unit] Description=A simple service to switch headphone jack function on Pinebook from serial to sound ConditionKernelCommandLine=!pinebook.forceserial [Service] Type=oneshot ExecStart=-/bin/bash -c "echo 362 > /sys/class/gpio/export" ExecStart=/bin/bash -c "echo out > /sys/class/gpio/gpio362/direction" ExecStart=/bin/bash -c "echo 1 > /sys/class/gpio/gpio362/value" ExecStop=/bin/bash -c "echo 0 > /sys/class/gpio/gpio362/value" RemainAfterExit=yes [Install] WantedBy=multi-user.target