title: does awk support quantifiers - i want [0-9]{6,6}
body: <p>gawk doesn't seem to match six digit fields - or n digit fields using the {n,m} quantifiers</p>
  
  <p>It does match [0-9][0-9][0-9][0-9][0-9][0-9] ok. </p>
  
  <p>Doesn't seem to support \d\d\d\d\d\d either.  </p>
  
  <p>Do i need to turn on extended reg ex, or does it just not support that.  </p>
  
  <p>Tnx</p>