Linux 配置文件對全局生效

vim ~/.bashrc
在文件最底部添加以下代碼

export JAVA_HOME=/usr/local/src/jdk1.6.0_45
export CLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib
export PATH=$PATH:$JAVA_HOME/bin
export HADOOP_HOME=/usr/local/src/hadoop-2.6.1
export HADOOP_MAPRED_HOME=$HADOOP_HOME 
export HADOOP_COMMON_HOME=$HADOOP_HOME 
export HADOOP_HDFS_HOME=$HADOOP_HOME 
export YARN_HOME=$HADOOP_HOME 
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native 
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin 
export HADOOP_INSTALL=$HADOOP_HOME 
ZOOKEEPER_HOME=/usr/local/src/zookeeper-3.4.10
PATH=$PATH:$ZOOKEEPER_HOME/bin

2.完事兒後source ~/.bashrc