Does some similar Auditing like in Windows exist in Ubuntu?

Hello,

yes there are a couple of ways:

Q:
In Windows you can check what Files are open via some kind of FileSystemWatcher
A:
open a gnome-terminal press Alt+F2 ->then enter gnome-terminal->at the command prompt enter ps -u username (a username will show a processes which started by the user root will show you all processes which start by the user root or by default (bootup)
OR
gnome-panel->system->administration->System Monitor
Q:
In Windows you can use Audit Rules
A: see above the option -u for more options and possibilities open a gnome-terminal->and enter man ps
Q:
In Windows you can See by the File Security, which User created a File.
A:
If a user creates a file the owner will set to the username, any changes can check f.e. with gnome-terminal->enter ls -l (-l stands for the option --author) for more information enter man ls in a terminal.
br
Mathias

Hello,
in addition to my first post there are many more option to figure out who touchs which file. But there are a lot of books about bash scripting or write security tools with perl and so on.
br
Mathias