Could you describe exactly the steps you have taken?
1) installed wiringpi (and tested as described on the developer site)
2) created your script
3) launched this command:
stdbuf --output=0 rtl_tcp -a 192.168.2.15 -p 1234 > rtl.data
4) used sdrsharp to connect to my raspberry (192.168.2.15, and it
connect ok, i can use sdrsharp ok)
5) nothing is displayed on the console of my raspy except the first 2
lines of rtl_tcp output
The rtl_data is created ok and looking inside that file i can see the
normal output of "rtl_tcp" (set freq blablablabla, etc...)
At the moment i've taken another approach...i've patched the rtl_tcp.c
to set the gpio directly...i'll post my "project" asap somewhere...