This new link is not a separate copy of the old file, but rather a different name for exactly the same file contents as the old file. Consequently, any changes you make to oldfile will be visible in newlink.
You can use the standard Unix rm command to delete a link. After a link has been removed, the file contents will still exist as long as there is one name referencing the file. Thus, if you use the rm command on a filename, and a separate link exists to the same file contents, you have not really deleted the file; you can still access it through the other link. Consequently, hard links can make it difficult to keep track of files. Furthermore, hard links cannot refer to files located on different computers linked by NFS, nor can they refer to directories. For all of these reasons, you should consider using a symbolic link, also known as a soft link, instead of a hard link.
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