Mass change of the document author

Tell me what to do)

Background:

У друга на работе уволился админ и на компе, буха, юрика
и самого директора, изменил пользователя на Х%Й Булыжников или Пися
Камушкин - не суть)
Но обнаружили это через неделю или две, когда открыли документы doc,
odt,xsl  и прочие офисные, нажали файл - Свойства и там увидели сие
чудо) а файлы они эти куда-то шлют и там через эту процедуру, даты
сверяют в случае чего,)

How can such office files be transferred en masse (change or remove the author)?)

It takes a long time (to create a new dock, throw everything into it and save it - there are hundreds of documents there) of course, now the User is normal, but some documents were left with the Easter egg)))

Tell me how you can change it automatically under linux or windows.

I think that the script is possible, but I do not understand how to work with the api or LibreOffice itself from the console

Thanks...

P.S. as it turned out-the admin was very offended... and then they realized that they were wrong, but it was too late)

Convert to another format, in the hope of changing the author just as pointlessly

libreoffice -env:UserInstallation=file:///home/firefedot/.config/libreoffice-alt --headless --convert-to odt *.doc

As a result, the same author of the document creation and the same authors of the changes remained.