[CentOS] Rsync and differential Backups

On 11/9/2015 12:02 PM, Frank Cox wrote:
> Now that you point that out, I agree.  I never thought about it that way before since I've always looked at a hard link as a link that you create after you create the initial file, though they become interchangeable after that.

on Unix systems, the actual 'file' is known as an inode, and is 
identified by a inode number.   Directories are other files that contain 
indexed directory entries with filenames pointing to these inodes.

the tricky thing with hard links is, you have to walk the whole 
directory tree of a given file system to find every entry pointing to 
the same inode if you want to identify these links.

-- 
john r pierce, recycling bits in santa cruz