title: How can I specify the HADOOP_HOME after I install hadoop 1.0.1 in ubuntu with deb intall file
body: <p>I have installed hadoop 1.0.1 in my ubuntu laptop by a deb install file.
  the hadoop files are install into different directories, eg: config file are installed into /etc/hadoop, but the bin files are installed into /usr/sbin. So how can I specifiy the HADOOP_HOME?</p>