/etc/cron.d/boxbackup-client is in boxbackup-client 0.11.1~r2837-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # Launch the boxbackup client/server synchronization when in snapshot mode
#0 0 * * * root /usr/sbin/bbackupctl -q sync
|