Sorry Christian, About symlink and NSFilemanagerMBS Class, I read from docs:
This method does not traverse symbolic links. If the item at the path is a symbolic link—that is, the value of the NSFileType key in the attributes dictionary is NSFileTypeSymbolicLink—you can use the destinationOfSymbolicLinkAtPath method to retrieve the path of the item pointed to by the link. You can also use the stringByResolvingSymlinksInPath method of NSString to resolve links in the path before retrieving the item's attributes.
destinationOfSymbolicLinkAtPath is method of which class ? How to implement It ?
THanks again for your precious help.