title: How to write a shell script where to add days month and year to current date
body: <p>I am new to shell script.</p>
  
  <p>I want to write a script where I add days month and years to current day.
  for example it take current date and every time addd 3 to day 4 to months and 2 to years.
  all the three things given as arguments.</p>
  
  <p>I would really appreciate it.</p>
  
  <p>Br</p>