But what is `userver'? at 367K, it's big enough to do something substantial.

It's a bit like netcat (nc)...

userver [-dlL1w02] [-p <file>] [-m <maximum>] [-R <directory>] [-U <user-spec>] [-C <directory>] [-t <time-spec>] [-a <token>] <local-address> <command> [<arg> ...]

...but aimed at people who don't think nc's command-line syntax is obscure enough.

The package it's from is called libunsn; I think it was written by one of Mike's university friends.

Peter