title: Bash: split line into multiple lines
body: <p>I have a list of words in lines:</p>
  
  <pre><code>aaaa bbbb ccc dddd
  eee fff ggg hhh
  iii jjj kkk
  </code></pre>
  
  <p>I want each word in a separate line:</p>
  
  <pre><code>aaaa
  bbbb
  ccc
  dddd
  eee
  fff
  ggg
  hhh
  iii
  jjj
  kkk
  </code></pre>
  
  <p>How to do that in bash with <strong>least number of characters</strong>? Without awk preferably.</p>