see UserID

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In case anyone was interested in finding out the UID of a file rather than the current user, try this:

NSFileManager * fileManager = [NSFileManager defaultManager]; NSDictionary * attributes = [fileManager fileAttributesAtPath: @”/cleanup at startup” traverseLink: YES]; NSNumber * owner = [attributes objectForKey: NSFileOwnerAccountID]; NSString * ownerName = [attributes fileOwnerAccountName]; unsigned long posixPermissions = [attributes filePosixPermissions];

NSLog(@”owner = %@”, owner); NSLog(@”ownerName = %@”, ownerName); NSLog(@”posixPermissions = %lu”, posixPermissions);