HFS+, also known as the Macintosh Extended Format, was
introduced by Apple Computer in 1998 with the release of MacOS
8.1. It contains many improvements over the old HFS file
system, most notably the ability to allocate up to 2^64
blocks, resulting in much more efficient storage of many small
files on large disks.
The hfsplus collection allows one to access volumes formatted with
the HFS+ file system from Debian GNU/Linux and related operating
systems. The collection contains tools to mount and unmount
HFS+ volumes, to change and list directories, and to copy
files to and from HFS+ volumes.
Note that unlike its cousin, the hfsutils collection used for
accessing HFS file systems, hfsplus does not use the Macintosh
pathname syntax with ":" as delimiter. Instead, it
mimics the unix notation, delimiting the names of volumes,
directories and files in a path with "/", and also
understands "." and ".." to some extent.