./test_survey server ipc:///tmp/test_survey.ipc & server=$!
./test_survey client ipc:///tmp/test_survey.ipc client0 & client0=$!
./test_survey client ipc:///tmp/test_survey.ipc client1 & client1=$!
./test_survey client ipc:///tmp/test_survey.ipc client2 & client2=$!
sleep 3 
kill $server $client0 $client1 $client2