What is lzo under centos?
centos下的lzo是“Lempel-Ziv-Oberhumer”的缩写,是一种致力于解压速度的数据压缩算法;lzo有用于perl、Python以及java的各种版本,能够压缩解压成块的数据,支持重复压缩以及原地解压。
本文操作环境:centos 7系统、Dell G3电脑。
centos下的lzo是什么
LZO 是致力于解压速度的一种数据压缩算法
LZO 是 Lempel-Ziv-Oberhumer 的缩写。这个算法是无损算法,参考实现程序是线程安全的。
实现它的一个自由软件工具是lzop。最初的库是用 ANSI C 编写、并且遵从 GNU通用公共许可证发布的。LZO 有用于 Perl、Python 以及 Java 的各种版本。代码版权的所有者是 Markus F. X. J. Oberhumer。
LZO 支持重复压缩以及原地解压。
LZO是块压缩算法——压缩解压成块的数据。压缩与解压所用块的大小必须一样。
LZO 将数据块压缩成匹配数据(滑动字典)与非匹配文字的序列。LZO 对于较长的匹配数据以及较长的非匹配文字序列有专门的处理,这样对于高度冗余的数据能够取得很好的效果,并且对于不可压缩的数据也能得到可以接受的效果。
准备工作:
yum -y install lzo-devel zlib-devel gcc autoconf automake libtool
安装LZO
1、解压编译,并安装
cd /opt/software wget http://www.oberhumer.com/opensource/lzo/download/lzo-2.09.tar.gz tar -zxvf lzo-2.09.tar.gz cd lzo-2.09 ./configure -enable-shared -prefix=/usr/local/hadoop/lzo/ make && make test && make install
2、复制文件
将/usr/local/hadoop/lzo/lib/* 复制到/usr/lib/和/usr/lib64/下
cp /usr/local/hadoop/lzo/lib/* /usr/lib/ cp /usr/local/hadoop/lzo/lib/* /usr/lib64/
3、修改配置环境变量(vi ~/.bash_profile),增加如下内容:
export PATH=/usr/local/hadoop/lzo/:$PATH
推荐教程:《centos教程》
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