Hello, people! I fixed my issue.
It did not sounds to be configuration related. Sounds more to be a permission issue. When I do not have permission there is no error yet. To fix the issue, I did: echo "$(sudo /opt/gnunet-bin/bin/gnunet-hello --export-hello -c peer1.conf)" | sudo /opt/gnunet-bin/bin/gnunet-hello --import-hello -c peer2.conf ; Thanks very much for help and support for everyone including martin!!
