title: Linux tool to send raw data to a TCP server
body: <p>I am aware that this is not a direct 'development' question but I need this info to test a development project, so I think someone could've hit similar problem.</p>
  
  <p>I will test a software that runs a TCP server and according to sent commands replies some answers. I will test the software and do not want to write code if it doesn't work well. So I want to send those commands and test drive the server software.</p>
  
  <p>How can I achieve this with a Linux box?</p>