I am looking for a way to parse out some numbers from text. This is an excerpt from a larger script that I am trying to make run a little smoother.
Specifically this script is used to Capture DV video streams on a linux machine from the terminal. The setup does 6 streams at once, and this part of the script is involved in instructing the particular instance of the script to record from 1 of the 6 DV devices. The DV devices have a GUID that identifys them, and I need to set each device to it's own channel so that streams don't get confused.
This part that I want to clean searches the results from the command plugreport (which I've included below) and finds what HOST ADAPTER and NODE each GUID is currentlty associated with. This information is used later in the script to tell each device what channel to broadcast on (using plugctl, this requires the HOST ADAPTER and NODE for each GUID)
Currently in my script below I run Plugreport 9 times to parse out the 9 possible combinations of HOST ADAPTER and NODE for the 6 GUIDs.
What I would like to do is run Plugreport 1 time and parse all the pertinant numbers to varibles and simply check those all at once...
Here is the mentioned chunk of script
And this is what Plugreport outputs (at the time of writing this only 4 of the usual 6 devices are connected, typically there would be 2 more under HOST ADAPTER 2 )
My first thought was to somehow pipe plugreport to a temporary file and then do my greps and awks from there? If anyone could suggest how I could do this, or perhaps there is a better solution that is much more cool that I just don't know about yet?
wouldn't it be easier to run 'plugreport' once, parse it once (for host, node, guid and channel) and do the necessary case/if if needed?
Yes, that's exactly what I'd like to do... just don't know how... and unfortunately my 'nawk' skillz are not quite up to par on this one.
I think your suggestion is actually a bit more complicated than I need. At this point all I need is to find values for $NODE and $HOST_ADAPTER that precede the input variable in the form 0x$deck_guid. No channel input or output needed at this point in the script.
for example if my varible deck_guid=00201101130062a5
then I need to end up with varibles that would be equavalent to NODE=1 and HOST_ADAPTER=1 (Based on the Plugreport quoted earlier)
This is probably part of the code you sent, but as I said I am not really sure what it all means, so I couldn't figure out how to get at the bits I need?
Just run script and modify the body of the 'while' to your likings - change 'echo' (once satisfied with the results) to whatever further logic you need.
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