TI task with unattended file system scan and OS shutdown

Any idea how does a single TI task need to look in order to perform following steps within it?
- imaging system partition (step listed for completeness, all is clear here)
- imaging some data partitions (step listed for completeness, all is clear here)
- performing the disk scan against presence of errors in file system, the system partition
- performing the disk scan against presence of errors in file system, the data partitions
(on some of them swap-files, temporary files/folders, other cache files/folders are located)
So these partitions can't be unmounted as long as the OS is operating
- restrict the access privileges to read/execute only for all users for partitions
where produced images had been placed (details of appropriate tools and batches are known)
- shutdown the OS

As you surely noticed it all steps should run unattended.
It is allowed to have multiple tasks. It is allowed that the whole procedure
performs OS reboots.