title: Setting path to git executable in RStudio under OSX Mountain Lion
body: <p>I am running RStudio v. 0.97.237 under Mac OSX v. 10.8.2 (Mountain Lion). I am trying to set the path to my git executable file in RStudio. The correct path is /usr/local/git. There is a preference setting in RStudio for entering the path to the Git executable file (Preferences..., Git/SVN, Git executable).  If I could simply type "/usr/local/git" into a dialog box, I expect I would be done.</p>
  
  <p>However, RStudio will not allow me to simply type in the directory path. Instead, one is required to browse through the directory tree using the standard OSX browsing ("Choose file") utility. Following an upgrade of OSX from Snow Leopard to Mountain Lion, I find that many system-related directories, including /usr, are no longer visible in the OSX file browsing utility. They are visible in the shell (using XQuartz, command "ls"), but not in the Mountain Lion GUI. (Apparently Mountain Lion thinks it knows what is good for me.)</p>
  
  <p>My questions:</p>
  
  <p>1.) Is there a way in RStudio to set the path to the Git executable file directly, command-line style, without needing to use the OSX directory browsing utility?</p>
  
  <p>2.) Alternatively, is there a way in OSX Mountain Lion to adjust System Preferences to make <em>all</em> directories and files visible, not just the restricted set visible using Mountain Lion's default settings?</p>
  
  <p>3.) Is there some other means to resolve this problem?</p>
  
  <p>Note: I had Git working properly with RStudio under OSX 10.6.8 (Snow Leopard). The problem arose after the upgrade to OSX 10.8.2. </p>
  
  <p>Thank you for any suggestions.</p>