Dump1090 to show only registration s

[david cummings]

Hi all
I am wondering if it is possible for the dump1090 soft ware on a raspberry pi to output the registration and only the registration of any aircraft it sees?

[peterhr]

./dump1090 --help suggests

./dump1090 --addronly

if you want to put that into a file add "> filename"

It will probably fill you pi very quickly

[david cummings]

Hiya
That basically sends the modeS to a text file I was looking for the registration eg ei-eko but it doesn't matter in the long run. I have a copy of the modeS in use and it's in my database on my website.
As for filling the pi 24 hours use only brings a file of 10k.

[peterhr]

There are other outputs, but they seem to produce 'pages' of info with headers and such like.

you could pipe the output from one of those to a cut instruction and pipe the output to a file

./dump1090 --interactive | cut c10-15 > frilename

(cuts characters 10 thru 15 ... you need to check your own offsets, and if I've got this right [i'm guessing])