Often you need to look for a file belonging to a certain user or group. This is done with the -user and -group search operators. You often need to combine this with a search for particular permissions. To find all files that are to root, use:
find . -user root -perm -4000 -print
To find all files that areto staff, use:
find . -group staff -perm -2000 -print
Instead of using a name or group fromor , you can use the :
find . -user 0 -perm -4000 -print%
find . -group 10 -perm -2000 -print
Often, when a user leaves a site, his account is deleted, but his files are still on the computer. Some versions of find have -nouser or -nogroup operators to find files with an unknown user or group ID.