/etc/lighttpd/conf-available/10-magnet.conf is in lighttpd-mod-magnet 1.4.35-4ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # /usr/share/doc/lighttpd/magnet.txt.gz
# http://trac.lighttpd.net/trac/wiki/Docs%3AModMagnet
server.modules += ( "mod_magnet" )
|