So, I've created a SQL Server Agent job, according to the answer to my prev question:
running nightly (at 2:11) according to the schedule:
There are 9 .bak files in 3 subdirectory of d:\backup\ source folder, 3 old bakup files are being deleted and 3 new is being created by another preceding SQL Server Agent job.
The described here job copy-purges files but... what the heck the history of this Copy&Purge BAKs
SQL ServerAgent job shows 96 items:
How to make it less verbose?
Eventvwr.msc doesn't contain any eroors for the corresponding period of time (of job run).
UPDATE:
So, I've made these changes
and it seems it simply truncates a per-job log: