[arch-general] Automatically stop systemd service

[Robbie Smith]

On 29/03/13 00:39, Leonid Isaev wrote:
> On Thu, 28 Mar 2013 18:23:03 +1100
> Robbie Smith <zoqaeski at gmail.com> wrote:
>
>> TL;DR: More toying with mobile broadband and systemd; would like help
>> automatically stopping service depending on device availability.
>>
>> [...]
>>
>> What I cannot figure out how to do is automatically stop the service if
>> the device is unplugged, similar to how ifplugd works for wired ethernet
>> interfaces.
>
> How about "BindsTo=" from man 5 systemd.unit? For example,
> "BindsTo=sys-subsystem-net-devices-wap.device".
>
That did the trick (when the device is /dev/ttyUSB0). Now to just make a 
persistent name for the rare occasions when it appears as something else 
(always a /dev/ttyUSBx).