title: Default value for File upload in R Shiny
body: <p>How can I select a default file when uploading a file in R/Shiny?</p>
  
  <p>This is the <a href="http://shiny.rstudio.com/gallery/upload-file.html" rel="nofollow">shiny app</a> I try to modify.</p>
  
  <p>As default, I want to see something like /tmp/test.csv instead of "No file selected".</p>
  
  <p>Any ideas?</p>