title: How do I find the current directory?
body: <p>I am trying to read a file which I read previously successfully.
  I am reading it through a library, and I am sending it as-is to the library (i.e. "myfile.txt").
  I know that the file is read from the working/current directory.</p>
  
  <p>I suspect that the current/working directory has changed somehow.
  How do i check what is the current/working directory?</p>