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*copy ambed.service to /etc/systemd/system/
*copy watchdog to /ambed/
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* xlxd executable must be in /xlxd/ folder
* ambed executable must be in /ambed/ folder
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* possible options:
*
* # systemctl start ambed        /starts ambed
* # systemctl status ambed       /shows status of ambed
* # systemctl stop ambed         /stops ambed
* # systemctl restart ambed      /restarts ambed
*
* automatically get it to start on boot:
* # systemctl enable ambed
*
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* If your usb port gets unresponsive and you get some persistent timeouts,
* the watchdog script restarts the ambed service.
* You can run it every 5 minutes by a cronjob.
* 
* */5 * * * * /ambed/./watchdog >> /ambed/watchdog.log
*
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