So you don't have to dig through the logs: (as root or sudo) ~# cat /var/lib/tor/pt_state/obfs4_bridgeline.txt ~# cat /var/lib/tor/fingerprint
or with multiple instances: ~# cat /var/lib/tor-instances/NN/pt_state/obfs4_bridgeline.txt
Or when running obfs4 in docker: docker exec `docker ps -aqf "name=obfs4"` get-bridge-line