title: awk Merge two files based on common field and print similarities and differences
body: <p>I have two files I would like to merge into a third but I need to see both when they share a common field and where they differ.Since there are minor differences in other fields, I cannot use a diff tool and I thought this could be done with awk.</p>
  
  <p>File 1:</p>
  
  <pre><code>aWonderfulMachine             1   mlqsjflk          
  AnotherWonderfulMachine     2   mlksjf          
  YetAnother WonderfulMachine 3   sdg         
  TrashWeWon'tBuy             4   jhfgjh          
  MoreTrash                     5   qsfqf         
  MiscelleneousStuff           6  qfsdf           
  MoreMiscelleneousStuff       7  qsfwsf
  </code></pre>
  
  <p>File2: </p>
  
  <pre><code>aWonderfulMachine             22    dfhdhg          
  aWonderfulMachine             23    dfhh            
  aWonderfulMachine             24    qdgfqf          
  AnotherWonderfulMachine     25    qsfsq         
  AnotherWonderfulMachine     26    qfwdsf            
  MoreDifferentStuff           27    qsfsdf           
  StrangeStuffBought           28    qsfsdf
  </code></pre>
  
  <p>Desired output:</p>
  
  <pre><code>aWonderfulMachine   1   mlqsjflk    aWonderfulMachine   22  dfhdhg
                                       aWonderfulMachine  23  dfhdhg
                                       aWonderfulMachine  24  dfhh
  AnotherWonderfulMachine 2   mlksjf  AnotherWonderfulMachine 25  qfwdsf
                                         AnotherWonderfulMachine  26  qfwdsf
  File1
  YetAnother WonderfulMachine 3   sdg         
  TrashWeWon'tBuy             4   jhfgjh          
  MoreTrash                     5   qsfqf         
  MiscelleneousStuff           6   qfsdf          
  MoreMiscelleneousStuff       7   qsfwsf         
  File2                   
  MoreDifferentStuff          27  qsfsdf          
  StrangeStuffBought          28  qsfsdf  
  </code></pre>
  
  <p>I have tried a few awks scripts here and there, but they are either based on two fields only, and I don't know how to modify the output, or they delete the duplicates based on two fields only, etc (I am new to this and awk syntax is tough).
  Thank you much in advance for your help.        </p>