/usr/share/doc/backupninja/examples/example.sh is in backupninja 1.0.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # Note: the spaces around the equal sign ('=') are optional.
when = saturdays at 05:30
dpkg --get-selections > /var/backups/dpkg-selections.txt
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