title: What is LD_LIBRARY_PATH and how to use it?
body: <p>I take part in developing a Java project, which uses some C++ components, thus I need <code>Jacob.dll</code>. (on Windows 7)</p>
  <p>I keep getting <code>java.lang.UnsatisfiedLinkError: no JacobDB in java.library.path</code> no matter where I put Jacob.dll....</p>
  <p>I looked for possible decisions and the one that I haven't tried so far is setting the <code>LD_LIBRARY_PATH</code> variable, pointing at the .dll file.</p>
  <p>I have little experience and I'm not familiar with what should be the meaning and usage of that variable - can you help me?</p>