title: How to extract a string from between two patterns in bash
body: <p>Im begining with bash and I want to find my ip in a .txt file analyzing it.
  This is an example of part of the file:
  "Direc. inet:192.******  Difus.:"</p>
  
  <p>The path I think on is searching all the text between "inet:" and " ". My biggest approach until now is getting the entire line with "grep inet:" but I can't figure out how to get just the ip not the entire line with the ip.</p>
  
  <p>Thank you!</p>