Installing Bzip2

Installation of Bzip2

Install Bzip2 by running the following commands:

root:bzip2-1.0.1# make -f Makefile-libbz2_so
root:bzip2-1.0.1# make bzip2recover libbz2.a
root:bzip2-1.0.1# cp bzip2-shared /bin/bzip2
root:bzip2-1.0.1# cp bzip2recover /bin
root:bzip2-1.0.1# cp bzip2.1 /usr/share/man/man1
root:bzip2-1.0.1# cp bzlib.h /usr/include
root:bzip2-1.0.1# cp -a* libbz2.a /lib
root:bzip2-1.0.1# rm /usr/lib/libbz2.a
root:bzip2-1.0.1# cd /bin
root:bin# rm bunzip2 && ln -s bzip2 bunzip2
root:bin# rm bzcat && ln -s bzip2 bzcat
root:bin# cd /usr/share/man/man1
root:man1# ln -s bzip2.1 bunzip2.1
root:man1# ln -s bzip2.1 bzcat.1
root:man1# ln -s bzip2.1 bzip2recover.1

Although it's not strictly a part of a basic LFS system it's worth mentioning that you can donwload a patch for Tar which enables the tar program to compress and uncompress using bzip2/bunzip2 easily. With a plain tar you'll have to use constructions like bzcat|tar xv or tar --use-compress-prog=bunzip2 -xvf file.tar.bz2 to use bzip2 and bunzip2 with tar. This patch gives you the -y option so you can unpack a Bzip2 archive with tar xvfy file.tar.bz2. Applying this patch will be mentioned later on when you re-install the Tar package.


The Bzip2 packages contains the bzip2, bunzip2, bzcat and bzip2recover programs.



bzip2 compresses files using the Burrows-Wheeler block sorting text compression algorithm, and Huffman coding. Compression is generally considerably better than that achieved by more conventional LZ77/LZ78-based compressors, and approaches the performance of the PPM family of statistical compressors.


Bunzip2 decompresses files that are compressed with bzip2.


bzcat (or bzip2 -dc) decompresses all specified files to the standard output.


bzip2recover recovers data from damaged bzip2 files.