[CentOS] Need help in writing a shell/bash script

John R Pierce wrote:
> On 12/30/11 9:58 AM, Les Mikesell wrote:
>> Here's a perl approach:
>
> which, unlike all the other versions, doesn't require the data be
> pre-sorted, by virtue of adding all the tuples to a hash.   I don't even
> think that sort in the output loop is required, unless you want the
> groups output in alphabetic order.

IIRC, the awk will come out in order, given the hash.

       mark