linux设置环境变量

一、/etc/profile或者~/.bashrc

export JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre
export HADOOP_HOME=/home/hadoop/hadoop-1.0.0
export HIVE_HOME=/home/hadoop/hive-0.8.1
export HADOOP_CONF_DIR=$HOME/conf
export HIVE_CONF_DIR=$HOME/hive-conf
export CLASSPATH=$HIVE_HOME/lib:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$HADOOP_HOME
export PATH=$HIVE_HOME/bin:$HADOOP_HOME/bin:$JAVA_HOME/bin:/sbin/:/bin:$PATH

#手动立即生效

source /etc/profile

 

二、vi /etc/profile.d/java.sh

    export JAVA_HOME=/usr/java/jdk1.6.0_21/

    export HADOOP_HOME=/opt/modules/hadoop/hadoop-1.0.3/

    export PATH=$JAVA_HOME/bin:$HADOOP_HOME/bin:$PATH

#手动立即生效

source /etc/profile