6.19. Bzip2-1.0.6

The Bzip2 package contains programs for compressing and decompressing files. Compressing text files with bzip2 yields a much better compression percentage than with the traditional gzip.

Приблизительное время сборки: менее 0.1 SBU
Требует свободного места на диске: 6.9 MB

6.19.1. Установка Bzip2

Применим патч that will install the documentation for this package:

patch -Np1 -i ../bzip2-1.0.6-install_docs-1.patch

The following command ensures installation of symbolic links are relative:

sed -i 's@\(ln -s -f \)$(PREFIX)/bin/@\1@' Makefile

Ensure the man pages are installed into the correct location:

sed -i "s@(PREFIX)/man@(PREFIX)/share/man@g" Makefile

Подготовим Bzip2 к компиляции with:

make -f Makefile-libbz2_so
make clean

The meaning of the make parameter:

-f Makefile-libbz2_so

This will cause Bzip2 to be built using a different Makefile file, in this case the Makefile-libbz2_so file, which creates a dynamic libbz2.so library and links все же запустить тестирование Bzip2 utilities against it.

Compile and test the package:


Install the programs:

make PREFIX=/usr install

Install the shared bzip2 binary into the /bin directory, make some necessary symbolic links, and clean up:

cp -v bzip2-shared /bin/bzip2
cp -av libbz2.so* /lib
ln -sv ../../lib/libbz2.so.1.0 /usr/lib/libbz2.so
rm -v /usr/bin/{bunzip2,bzcat,bzip2}
ln -sv bzip2 /bin/bunzip2
ln -sv bzip2 /bin/bzcat

6.19.2. Содержимое Bzip2

Установленные программы: bunzip2 (link to bzip2), bzcat (link to bzip2), bzcmp (link to bzdiff), bzdiff, bzegrep (link to bzgrep), bzfgrep (link to bzgrep), bzgrep, bzip2, bzip2recover, bzless (link to bzmore), and bzmore
Установленные библиотеки: libbz2.{a,so}
Установленный каталог: /usr/share/doc/bzip2-1.0.6

Краткое описание


Decompresses bzipped files


Decompresses to standard output


Runs cmp on bzipped files


Runs diff on bzipped files


Runs egrep on bzipped files


Runs fgrep on bzipped files


Runs grep on bzipped files


Compresses files using the Burrows-Wheeler block sorting text compression algorithm with Huffman coding; the compression rate is better than that achieved by more conventional compressors using Lempel-Ziv algorithms, like gzip


Tries to recover data from damaged bzipped files


Runs less on bzipped files


Runs more on bzipped files


The library implementing lossless, block-sorting data compression, using the Burrows-Wheeler algorithm