Select files in Nautilus and right click, go to scripts and choose Make me the owner of this.
This will change the owner of the files you want. The script also checks if youre about to chown some system directories like /tmp, /usr, /etc and displays an error message telling you can't do that without breaking your system.
To install the script :
Copy the file into your :
Then, make it executable.
Youre done. Enjoy !
Hope it will be helpful to others... this is my first script, don't hesitate to give me advices to make it better !