status of a tap device ...

[Marc G. Fournier]

Ended up finding the perl module: p5-Net-Ifconfig-Wrapper that does the 
trick ...

Although your suggestinos are much appreciated below, the problem is 
that I have the tap devices, and bridge 'addm's happening on server 
reboot, but need to know which one is in use before starting up / using 
them for vBox ...

Thank you for the response though ...



On 2013-05-09 10:19 PM, Jason Hellenthal wrote:
> Ifconfig -v tap0 ? Does this work for you ?
>
> Also upon opening a tap...
>
> ifconfig tap create
>
> Will return the numeric portion of the tap that was created with $?
>
> So scripting it out it would be similar to...
>
> ifconfig tap create && export MYTUNIS="$?"
>
> echo "tap$MYTAPIS"
>
> /-- /
>
> /*Jason Hellenthal*/
>
>  IS&T Services Professional
>
>  Inbox: /jhellenthal at DataIX.net <mailto:jhellenthal at DataIX.net>/
>
>  JJH48-ARIN
>
>
>
> On May 10, 2013, at 1:03, "Marc G. Fournier" <scrappy at hub.org 
> <mailto:scrappy at hub.org>> wrote:
>
>>
>> Quick question ... is there a command I can run that will tell me if 
>> a tap device is open?  I know I can do 'ifconfig tap0' and see the 
>> 'Opened by' line, but I want to do this within a perl script, for 
>> instance, akin to how I can use the fstat function to get information 
>> about a file ...
>>
>> Rather avoid re-creating the wheel, so to say, if its already been 
>> created ...
>>
>> Thx
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