title: How to read multiple tables from different directory in R?
body: <p>I have a list of files under 12 different folders, each file has the same name. For example, under folder_A  there is a file called quant.txt, under folder_B there is also a file called quant.txt, and so on for other folders. All of these 12 folders are under the same directory.</p>
  <p>How do I read/import the list of files from those 12 folders? Maybe something like <code>lapply</code> or <code>list.files</code>?</p>