title: What do you mean by 'make' command in linux?
body: <p>First, i know that <code>make</code> is used for building the code. But which code?</p>
  
  <p>But what does it mean by building a code, and after executing the <code>make</code> command, what is presented to the user?</p>
  
  <p>Second, how is it different from <code>make build_for_e2e</code>?</p>