/var/lib/tor is owned by user/group debian-tor.
/var/run/tor is owned by user/group root.
Therefore using DataDirectory /var/run/tor in /etc/tor/torrc would maybe not be a great idea. (Would lead to permission issue.)

Must be some non-persistent folder owned by user/group debian-tor.

A script on boot up that runs

chgrp -R debian-tor /var/run/tor

can do it?

http://ss64.com/bash/chgrp.html

Seems like on jessie there is no permission issue anymore. /var/run/tor is owned by user/group debian-tor by default. Check /etc/init.d/tor function check_torpiddir. Therefore /etc/tor/torrc setting DataDirectory /var/run/tor works out of the box in Whonix 11.

[/usr/lib/whonixcheck/check_tor_pid](https://github.com/Whonix/whonixcheck/blob/master/usr/lib/whonixcheck/check_tor_pid) in whonixcheck needs a patch. That whonixcheck test fails because it's hardcoded to /var/run/tor/tor.pid. For Whonix 11 purposed you could add to documentation to skip this test then.*

*(Somewhat documented in /etc/whonix.d/30_whonixcheck_default. Create a file /etc/whonix.d/50_user with content whonixcheck_skip_functions+=" check_tor_pid ".)

Where to add this? Not sure where this fits best.

Maybe on https://www.whonix.org/wiki/Tor?

Link from:

• https://www.whonix.org/wiki/Documentation

Maybe mentioned on:

• https://www.whonix.org/wiki/Bridges and/or
• https://www.whonix.org/wiki/Hide_Tor_and_Whonix_from_your_ISP

Where to add this? Not sure where this fits best.

Maybe on https://www.whonix.org/wiki/Tor?

Yes I added it there.

Good work! Added to https://www.whonix.org/wiki/Documentation. Moved/incorporated Tor chapter from https://www.whonix.org/wiki/Advanced_Security_Guide#Tor to https://www.whonix.org/wiki/Tor. Made some changes.

On https://www.whonix.org/wiki/Documentation the page https://www.whonix.org/wiki/Tor is listed under advanced topics. Non-ideal. Too buried. Not something regular users read.

What about making https://www.whonix.org/wiki/Tor#Introduction a template (https://www.whonix.org/wiki/Template:Persistent_Entry_Guards_Introduction), and adding a new chapter to the https://www.whonix.org/wiki/Warning page 'Guard Relays can make you fingerprintable Across Different Physical Locations' or so? (Is "fingerprintable" the right term here?) What do you think? Could you do that please?