title: escaping newlines in sed replacement string
body: <p>Here are my attempts to replace a <code>b</code> character with a newline using <code>sed</code> while running <code>bash</code></p>
  
  <pre><code>$&gt; echo 'abc' | sed 's/b/\n/'
  anc
  </code></pre>
  
  <p>no, that's not it</p>
  
  <pre><code>$&gt; echo 'abc' | sed 's/b/\\n/'
  a\nc
  </code></pre>
  
  <p>no, that's not it either. The output I want is</p>
  
  <pre><code>a
  c
  </code></pre>
  
  <p>HELP!</p>