title: setwd() in the current working dir
body: <p>I have a list of folders. In each folder there's an R identical script that have to run on files into the folder. I wrote the script one time and copied the script in each folder. The problem is that I have  a list of around 100 folders so it is impossible to me to setwd() in the current working dir by hand. I would like to know if it is possible to set current working dir with for example a "." in this way: </p>
  
  <pre><code>setwd("/User/myname/./")
  </code></pre>
  
  <p>or in another easy way that tells R the current working dir instead of typing every time the folder name.</p>