title: Create new tmux session from inside a tmux session
body: <p>I'm writing a shell script that creates / attaches or switches to a given session, depending on whether one is inside tmux and the session exists.</p>
  
  <p>I've got everything working great except for the case requiring the creation of a new tmux session from within a tmux session.  </p>
  
  <p>When my script executes <code>tmux new-session -s name</code>, I get the following output:</p>
  
  <blockquote>
    <p>sessions should be nested with care, unset $TMUX to force</p>
  </blockquote>
  
  <p>I don't actually want to nest sessions, my goal is to <strong>create another separate session and switch to it from within a tmux session</strong>. </p>
  
  <p>Is this possible?</p>