**      The exponentiation operator.
 **=     The exponentiation assignment operator.
 ()      The null list, used to initialize an array to null.
 .       Concatenation of two strings.
 .=      The concatenation assignment operator.
 eq      Striing equiality (== is numeric equality)
 ne      String inequality (!= is numeric inequality).
 lt      String less than.
 gt      String greater than.
 le      String less than or equal.
 ge      String greater than or equal.
 cmp     String comparison, returning -1, 0, or 1.
 <=>     Numeric comparison, returning -1, 0, or 1.
 =~      String modification
 !~      Just like =~ except the return value is negated.
 x       String repetition
 x=      String repetition assignment
 ..      Range operator (Array context=array,Scalar=boolean)
 -x      File test
 What C has that perl doesn't