title: How to print variable's value as literal string
body: <p>Not sure if the title is precise. Let's say I have a variable with a string:</p>
  
  <pre><code>var=C:\Windows\file.exe
  </code></pre>
  
  <p>And I'd like to print it's value as if it were a literal string, i.e. I want to see this on the screen:</p>
  
  <pre><code>C:\Windows\file.exe
  </code></pre>
  
  <p>But, of course, the usual ways to print a variable don't do that:</p>
  
  <pre><code>echo $var
  C:Windowsfile.exe
  echo "$var"
  C:Windowsfile.exe
  echo '$var'
  $var
  </code></pre>
  
  <p>Is it possible to do that?</p>