We assume /source/dir is a filesystem, if there are other filesystems under /source/dir they will also be copied to /destination/dir
cd /source/dir
tar -cf - . | ( cd /destination/dir ; tar -xpvf - )
We assume /source/dir is a filesystem, if there are other filesystems under /source/dir they will also be copied to /destination/dir
cd /source/dir
tar -cf - . | ( cd /destination/dir ; tar -xpvf - )