title: Command Prompt - outputting results without overwriting target file
body: <p>I have a situation where I output results from a CLI program:</p>
  
  <p>e.g. input.exe > output.txt</p>
  
  <p>Although output.txt already contains text, by default it gets overwritten when using the command above, how can you write the output to output.txt without overwriting existing data?</p>