Match digits in [g]awk

Question

I\'m stumped! Trying to write an awk regex to match a string against 11 digits.

I\'ve tried:

if (var ~ /^[0-9]{11}$/ )
if (var ~ /^([0-9]){11}$/ )
if (va         


        

Answer 1

Doh - forgot to RTM:

              Interval expressions are only available if either --posix or
              --re-interval is specified on the command line.