Is the tor software successfully launched? Try simply launching the tor software just by opening a terminal window and typing “tor” in the Debian command line. This will start the tor software. If the bridge becomes successfully useable, you will see a message which will read “Self testing indicates your QRPort is reachable. Excellent. Publishing server descriptor” (I am not sure what the exact confirmation messages is for bridges but if the tor software manages to confirm your bridge is useable you should see a message that read something like that).

• Tail-f /var/log/tor/log

Try navigating to /var/log/tor/. This is where tor will normally save the log files to. See if there is a tor log text file there. If you have not started your relay, tor might not have created the log file yet.

Try starting the tor software then see if the file appears after that.

From: I
Sent: Monday, June 25, 2018 4:51 PM
To: tor-relays@lists.torproject.org
Subject: Re: [tor-relays] bridge installation help please

Keifer, thanks for the swift answer,

! shift work

I followed https://trac.torproject.org/projects/tor/wiki/doc/PluggableTransports/obfs4proxy

on a vps with Debian 9
the torrc reads

RunAsDaemon 1
ORPort 9001
BridgeRelay 1
ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy
ExtORPort auto
DataDirectory /var/lib/tor
ContactInfo <p at gmail dot com>
Nickname <name>

from root this  

tail -F /var/log/tor/log

brought this

tail: cannot open '/var/log/tor/log' for reading: No such file or directory

Rob