change file owner in a directory
 

I have a directory , many files from different users will copy files to it , so there are many file owners in this directory , if I would like to make all file owner are a specific user , that means once the files are copy to this different , then change its owner to a specific user , I know I an set a cron job , but it seems too last to change owner as I would like do it real time when the files are created .

can advise what can I do ?

thanks

Did you try anything so far? It can be done using chown cmd, with recurssive option:
Well, as far as I know, there's no way to change owner as soon as a new file gets created inside that directory. But in such situation, to protect data or for availability of data to all memebers of a group/project, you can go with SGID and Sticky bit utilities.