ubuntu下环境变量配置，ubuntu环境变量配置
export JAVA_HOME=/home/hadoop/jdk1.7.0_45
export JRE_HOME=${JAVA_HOME}/jre
export ZOOKEEPER_HOME=/home/hadoop/hadoop/hadoop-2.2.0/zookeeper-3.4.5
export HADOOP_HOME=/home/hadoop/hadoop/hadoop-2.2.0
export HADOOP_2_HOME=/home/hadoop/hadoop-0.20.2
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib:${ZOOKEEPER_HOME}/lib:${ZOOKEEPER_HOME_2}/lib
export PATH="$PATH:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:${JAVA_HOME}/bin:${ZOOKEEPER_HOME}/bin:${ZOOKEEPER_HOME_2}/bin:${HADOOP_HOME}/bin:${HADOOP_2_HOME}/bin:${HADOOP_HOME_2}/bin"
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