title: How to save plot in julia?
body: <p>I am using StatsPlots package to perform basic plotting.</p>
  <pre><code>df = DataFrame(A = 1:10, B =rand(10))
  @df df plot(:A, :B)
  </code></pre>
  <p>it returns a plot file like below as I expected. <a href="https://i.stack.imgur.com/XOusX.png" rel="noreferrer"><img src="https://i.stack.imgur.com/XOusX.png" alt="enter image description here" /></a></p>
  <p>Is there anyway I can save this plot image into my machine(Ubuntu) as a file?</p>