/lib/partman/finish.d/01remove_os_prober_cache is in ubiquity 18.04.14.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 | #! /bin/sh
set -e
rm -rf /var/lib/ubiquity/os-prober-cache \
/var/lib/ubiquity/linux-boot-prober-cache
|