cr...@got.net (i'll teach you to turn away.) writes: >Cameron Hutchison <li...@xdna.net> wrote: >CH> How can I write a udev rule to be run/matched when a device is >CH> unplugged? >CH> >CH> I have a 3G modem that I wrote a rule for to run "ifup ppp0" when the >CH> modem is plugged in. I would like to have "ifdown ppp0" be automatically >CH> run when the modem is unplugged.
> when i was using a modem, i used a cronjob that checked for >/var/run/ppp0.pid. when it's not detected, you can have it execute "ifdown >ppp0". Thanks, but unfortunately, a cron job is not responsive enough for me, as I want to be able to unplug the modem and plug it back it and have that work. I found the issue(s) in the end. Udev does support the action "remove", but you cannot use all the match rules you might use on an add event. I guess that this is because the device is no longer there so the sysfs attributes are gone. Once I tweaked my rules I got half way there. The other half way there was realisin that there was no remove event generated for ttyUSB0 - I assume that it is because the device is still in use just at that time. Thankfully the modem also generates events for ttyUSB1 and ttyUSB2, so I could trigger the removal off one of those. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
