libcompress-raw-bzip2-perl 2.048-1 (amd64 binary) in ubuntu precise

 Compress::Raw::Bzip2 provides a low-level interface to bzip2 compression
 library for perl.
 .
 Usually, you don't need to use this directly; modules like
 IO::Compress::Bzip2 in the libio-compress-perl package provide a nice,
 more high-level interface for your in your own perl programs.