/etc/default/monotone is in monotone-server 1.1-4+deb8u2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | # init.d config file for monotone
# this must be set to 1 for monotone to start
START=0
# the address and or port (ADDRESS[:PORT]) monotone should listen on
#ADDRESS=0.0.0.0
# the database to use
#MTN_DB=/var/lib/monotone/default.mtn
# Various other options, don't touch unless you know what you are doing.
#MTN_HOME=/var/lib/monotone
#MTN_CONFDIR=/etc/monotone
#MTN_KEYDIR=$MTN_HOME/keys
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