/etc/init/anacron.conf is in anacron 2.3-24.
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 | # anacron - anac(h)ronistic cron
#
# anacron executes commands at specific periods, but does not assume that
# the machine is running continuously
description "anac(h)ronistic cron"
start on runlevel [2345]
stop on runlevel [!2345]
expect fork
normal exit 0
exec anacron -s
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