bzip2-doc 1.0.6-8.1ubuntu0.2 (armhf binary) in ubuntu bionic

 bzip2 is a freely available, patent free, high-quality data compressor.
 It typically compresses files to within 10% to 15% of the best available
 techniques, whilst being around twice as fast at compression and six
 times faster at decompression.
 .
 This package contains the bzip2 user manual.