Is there any Terminal command to find the files installed by a particular App?
Files created by apps are usually in /Library and subfolders likes Application Support, Caches...

The files are not created by a specific user "AppName" but with your user account rights (or root one for some of them). So there is no way to locate App created files, unless if the app correctly named them.

So you can use the find command like that:

$ find /Libray -name "*AppName*"


http://www.techradar.com/how-to/computing/apple/terminal-101-using-the-find-command-1305633

Grep command can work too:

$ ls -la /Library | grep "AppName"