title: "Run Process open . {filepath}" in robotframework is not working on Mac but "Run Process explorer.exe {filepath} is working on Windows
body: <p>I'm using Robotframework 3.0 on Windows10 and Mac Sierra/El Capitan. I tried to use the "Copy file" from the OperatingSystem Library of RF on both the systems but on Mac it is not working. Here is the script on Mac:</p>
  
  <pre><code>Copy file    Testfiles${/}${file}    ${MyDir}
  List Directory    ${MyDir}
  Run Process open .  /select,${MyDir}${/}${file}  //open . opens the finder
  Sleep   5   
  Press Ctrl  NUMPAD5    //Right click on Mac
  Sleep   1   
  Send Keys   e   
  </code></pre>
  
  <p>I get the following error:</p>
  
  <blockquote>
    <p>OSError: Cannot run program "open ." (in directory "/Users/rj/PycharmProjects/automation"): error=2, No such file or directory</p>
  </blockquote>
  
  <p>Script on Windows which works:</p>
  
  <pre><code>Copy file   Testfiles${/}${file}    ${MyDir}
  List Directory  ${MyDir}    
  Run Process explorer.exe    /select,${MyDir}${/}${file}
  Sleep   5   
  Press Alt and Function    10  //Right click on Windows  
  Sleep   1   
  Send Keys   e   
  </code></pre>
  
  <p>Where: Testfiles is a directory and I want to copy the {file} to other directory {MyDir}. Send keys, "Press Alt and Function 10" are the keywords created on my Java library</p>
  
  <p>The RF opens up the Testfiles directory but doesn't select the "file" to copy. This scenario happens only in Mac and the same scripts works perfectly on Windows.   </p>
  
  <p>PS: I've changed the path of {MyDir} according to Windows and Mac.  </p>