title: How to change SBCL's current directory?
body: <p>It is <em>very</em> easy to change CLisp's current working directory:</p>
  
  <pre><code>&gt;cat ~/.clisprc.lisp 
  ;;; The following lines added by ql:add-to-init-file:
  #-quicklisp
  (let ((quicklisp-init (merge-pathnames "quicklisp/setup.lisp" (user-homedir-pathname))))
    (when (probe-file quicklisp-init)
    (load quicklisp-init)))
  
  (cd "/media/E/www/qachina/db/doc/money")
  (load "money")
  </code></pre>
  
  <p>However, it seems there is no <code>cd</code> similar function in SBCL. How can this be done with SBCL?</p>