我所有的 Hadoop 配置文件都位于以下位置：
./.linuxbrew/Cellar/hadoop/2.7.3/libexec/etc/hadoop/"
要设置我的 HADOOP_HOME 变量，我是使用点符号还是 ~？
HADOOP_HOME = "./.linuxbrew/Cellar/hadoop/2.7.3/libexec/etc/hadoop/"
或者
HADOOP_HOME = " ~/.linuxbrew/Cellar/hadoop/2.7.3/libexec/etc/hadoop/"