[racket] Aging code

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Thu Jul 11 11:58:55 EDT 2013

On Jul 10, 2013, at 10:41 PM, Asumu Takikawa wrote:

> On 2013-07-10 18:03:07 -0400, Sean McBeth wrote:
>> -- Embrace more of the Unix philosophy of small programs doing one thing
>> well.  You cannot deny that programs like ls, cd, mkdir, grep, etc. have
>> lasted a very, very long time and have no need for being changed (beyond
>> the occasional discovery of defects).
> It's interesting that you mention these examples. While `ls` and `cd`
> are less likely to be superceded, a lot of other unix utilities are
> improved or replaced by competitors.
> For `grep` there is `ack` for example. There are many versions of the
> `locate` utility, many competing ntpds, fetchmails, many pagers, and so
> on. It seems like in these cases what's more important is the "service"
> (or perhaps "interface") that is provided.

These programs have well-defined interfaces and we have many 
programmers in the world who like to write systems programs, 
in their spare time or as researchers to make a point. 

-- Matthias

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