linux添加环境变量的办法:
1. 编辑 vi ~/.bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
export JAVA_HOME="/usr/lib/jvm/java-1.7.0-openjdk.x86_64"
export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar
export REDIS_HOME=/home/hadoop/redis3
export HADOOP_HOME=/home/hadoop/hadoop26
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export HIVE_HOME=/home/hadoop/hive121
export HIVE_CONF_DIR=$HIVE_HOME/conf
export PATH=$PATH:$HIVE_HOME/bin:$HADOOP_HOME/bin:$JAVA_HOME/bin
export PATH
2. 让新设置的环境变量生效:
source ~/.bash_profile

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