title: extract month number from sysdate without 0 in R
body: <p>I am trying to get the current month numbers for a code in R through this -</p>
  
  <pre><code>currentDate&lt;-Sys.Date()
  month_num &lt;- format(Sys.Date(),"%m")
  </code></pre>
  
  <p>The output I am getting is "03" for today(28/03/2018)
  Is there a way that I can get 3 instead ?
  Such as Jan:1 , Feb : 2 and so on Dec: 12 
  (without hard-coding it)</p>