linux添加环境变量

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