title: Use of base64 encoding when piping
body: <p>I am trying to do the following:</p>
  
  <pre><code>echo "Hallo Welt" | signal-cli -u +49xxxxx send -g 5JY0o+sDPsmbcpx44iIQ==
  </code></pre>
  
  <p>(the value after "-g" is a base64 encoded value)</p>
  
  <p>However, this fails, as the two equal signs at the end of the base64 encoded value are stripped from the line and the program signal-cli complains of not knowing "5JY0o+sDPsmbcpx44iIQ". How can I make sure that the two equal signs are not lost in this piping sequence?</p>