Linux Phrasebook 

Find Files by Ownership

find -user

In addition to searching for files by name, you can also search for files by owner. Do you want to find the files on the music drive owned by scott? Use find with the -user option, followed by the user name (or the user number, which you can find in /etc/passwd):

$ find . -user scott

Whoa! There are way too many results! It might be easier to look for files that are not owned by scott. To do so, put a ! in front of the option you wish to reverse:

$ find . ! -user scott
./Outsider/Wing/01_-_Dancing_Queen.mp3
$ ls -l ./Outsider/Wing/01_-_Dancing_Queen.mp3
gus music ./Outsider/Wing/01_-_Dancing_Queen.mp3

Ah... one song by Wing is owned by gus instead of scott. To fix this problem, we need to use chown (covered in Chapter 7, "Ownerships and Permissions"). Keep in mind that you can always use the ! as a NOT operator (which is saying, for example, "find files where the user is not scott").