title: Using date to get tomorrows date in Bash
body: <p>I want to write a bash script that will run on a given but process data with next days date, My current approach is to get the unix time stamp and add a days worth of seconds to it, but I cant get it working, and haven't yet found what I'm looking for online. </p>
  
  <p>Here's what I've tried, I feel like the problem is that its a string an not a number, but I dont know enough about bash to be sure, is this correct? and how do I resolve this?</p>
  
  <pre><code>today="$(date +'%s')"
  
  tomorrow="$($today + 86400)"
  
  echo "$today"
  
  echo "$tomorrow"
  </code></pre>