On Sat, 2007-01-13 at 08:46 -0500, William L. Maltby wrote: > On Thu, 2007-01-11 at 23:08 +0100, Andreas Rogge wrote: > > You can't. > > Ken Thompson decided that this complicates things too much so this was > > disabled back in the 70ies. > > You can however do a > > mount --bind /var/spool /home/recordings > > this has a quite similar effect. > > Not quite! See below. > > > > > Regards, > > Andreas Rogge > > > > Am Freitag, den 12.01.2007, 05:50 +0800 schrieb Mark Quitoriano: > > > Hi im trying to hard link a folder and i get this > > > > > > # ln /var/spool /home/recordings > > > ln: `/var/spool': hard link not allowed for directory > > > > > > how do i hard link a directory? > > What you really need to do is make a new directory and hardlink all the > files from the original in the new directory. > > This increments the link count for each file in the original directory > (and so also, the new directory) so that an rm of one directory's file > (s) just decrements the link count, removes the file entry in the > appropriate directory and leaves the other directory's file entry alone > (except for the reduced link count, which is not associated with the > directory anyway) and leaves the underlying file contents in place. > > This is not at all like a mount --bind. > > One further "gotcha": when you replace the file in one directory by "mv" > or "rm ; cp" etc., the other copy is left unaltered and it is easy to > forget that the two "copies" are no longer the same. > > Before the mv/rm/cp, etc. alterations to the file from either directory > appeared in the other. This no longer occurs. > > > ><snip sig stuff> > > Forgive any errors, it's been decades. > Also ... just for the record ... hardlinking is built into the copy command: cp -al dir1 dir2 (that will create a hard linked directory of files in dir2 that are from dir1. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.centos.org/pipermail/centos/attachments/20070114/8ca7f717/attachment-0004.sig>