so I hired a freelancer to do some work on my server that required admin access.
Before hiring him I took a backup of my debian installation on that server.
I have a basic level of trust with this guy but just to be sure is there a way to check the complete debian installation for differences in files?
Something that will preferably output a list of directories that either do not exist in my offline backup or files that have different size or have been edited recently.
So that I can check upon any added config file/software that he may have installed without my approval?
Thanks.