A login session (under Jessie) running
certbot -d example.com -d www.example.com it froze, and when I tried to run Let & # 39; s Encrypt & # 39; s certbot from another session, it said: "Another instance of Certbot is already running." I made a
kill -HUP in the process still running, and tried to run certbot with a
--config-dir argument among other things, and I got the same error.
How can I ask to forget the first attempt?
Is there a lock file that I can delete?