On 05/30/2012 01:39 AM, Michelle Steiner wrote:
> Tim Cook was asked about Ping at the All Things D conference this evening;
> here's what went down:
>
> 8:01 pm: What happened to Ping?
>
> Cook: I was carefully avoiding that. We tried Ping and I think the
> customer voted and said this isn’t something that I want to put a lot
> of energy into.
> Will we kill it? I don’t know. We’ll look at that.
That's a shame. ping has had a long illustrious career as a network
administration tool.
http://ftp.arl.mil/~mike/ping.html
[quote] Excellent, heart-warming tale of exploration and discovery.
Using deft allegory, the authors have provided an insightful and
intuitive explanation of one of Unix's most venerable networking
utilities. Even more stunning is that they were clearly working with a
very early beta of the program, as their book first appeared in 1933,
years (decades!) before the operating system and network infrastructure
were finalized.
The book describes networking in terms even a child could understand,
choosing to anthropomorphize the underlying packet structure. The ping
packet is described as a duck, who, with other packets (more ducks),
spends a certain period of time on the host machine (the wise-eyed
boat). At the same time each day (I suspect this is scheduled under
cron), the little packets (ducks) exit the host (boat) by way of a
bridge (a bridge). From the bridge, the packets travel onto the internet
(here embodied by the Yangtze River).
The title character -- er, packet, is called Ping. Ping meanders around
the river before being received by another host (another boat). He
spends a brief time on the other boat, but eventually returns to his
original host machine (the wise-eyed boat) somewhat the worse for wear.
The book avoids many of the cliches one might expect. For example, with
a story set on a river, the authors might have sunk to using that tired
old plot device: the flood ping. The authors deftly avoid this.
Who Should Buy This Book
If you need a good, high-level overview of the ping utility, this is the
book. I can't recommend it for most managers, as the technical aspects
may be too overwhelming and the basic concepts too daunting.
Problems With This Book
As good as it is, The Story About Ping is not without its faults. There
is no index, and though the ping(8) man pages cover the command line
options well enough, some review of them seems to be in order. Likewise,
in a book solely about Ping, I would have expected a more detailed
overview of the ICMP packet structure.
But even with these problems, The Story About Ping has earned a place on
my bookshelf, right between Stevens' Advanced Programming in the Unix
Environment, and my dog-eared copy of Dante's seminal work on MS
Windows, Inferno. Who can read that passage on the Windows API
("Obscure, profound it was, and nebulous, So that by fixing on its
depths my sight -- Nothing whatever I discerned therein."), without
shaking their head with deep understanding. But I digress. [/quote]