HDUP2 - README
To compile and install hdup2 just do a:
./configure && make install
hdup2 does not include directory information in the backup. Why? Because
Gnu tar cannot handle that correctly. If hdup2 would include this
information in the backup list, the backup (ie. the tar file) would
include everything twice! Yes, this is a bug in Gnu tar and will be
So hdup2 does not include this information.
Related to this is that empty directories are not included in the
As soon as Gnu tar can handle this, hdup2 will be able to handle
Some Gnu Tar seems to have an issue with files having '\' (backslashes)
Older tar's (1.3.25) do not work reliabily with hdup2. If you cannot
upgrade Gnu tar to a more modern version don't upgrade to hdup2, but
stay with hdup1.6. Current Gnu tar releases are for instance 1.15.1.