title: How to proper xml in shell
body: <p>1st post:</p>
  
  <p>I started a project which uses a shell executable under Linux, and it reads xml files within folders, creates new xml files and do logical comparations there...</p>
  
  <p>I started and there are already a few lines of code (150) but i want to start over again to make it with really clean xml.</p>
  
  <p>Do you have any recommendations what to read to get into it.
  How do it put all the read data in the RAM of the PC instead of read it over and over again within each loop where logical comaparions are made so its fast and effective?</p>
  
  <p>Thats the project:</p>
  
  <p><a href="https://github.com/docduckington/folderagency" rel="nofollow noreferrer">https://github.com/docduckington/folderagency</a></p>
  
  <p>I wanted to use shell instead of python or c/c++/java</p>
  
  <p>Thanks for any tips and recommendations</p>