You can use the --verify-config
flag. (See the Tor manual for more options.)
However, you have to pass the flag to the Tor executable itself, rather than the start-tor-browser
script, which is probably what you're used to using to get things running.
The executable is in the tor-browser_en-US/Browser/TorBrowser/Tor/
directory. The complete command to run on Linux would be:
tor-browser_en-US/Browser/TorBrowser/Tor/tor --verify-config
The Windows equivalent would be:
.\Tor Browser\Browser\TorBrowser\Tor\tor.exe --verify-config | more
Note that the | more
is required in Windows to workaround a bug that prevents console logs being output. (See this thread for more details: Is the latest Tor-0.2.5.10 Expert Bundle broken?.)