title: Where is the hdfs?
body: <p>I have hadoop installed (single-node) installed on my machine.  How do I interact with the hdfs?</p>
  
  <p>I thought that creating a directory using hadoop fs mkdir would have everything in that directory be in the hdfs, but I can interact write into that directory using normal linux commands.  Perhaps I am completely misunderstanding how the file system works, but I thought it was append only and can only be accessed using its api.</p>