Server script without built-in sockets

[Kurt Granroth]

I'm not aware of any desktop Linux distro that doesn't have perl,
either.  I certainly wouldn't want to use any distro that skipped
something as fundamental as perl.  No, I was thinking more along the
lines of embedded Linux environments like DD-WRT and the like.  I want
my script to run with absolute minimal requirements.

Mostly, though, I just object to using perl this time because then I
would have to keep arguing with myself "why don't I just do the entire
thing in perl" :-D

Judd Pickell wrote:
> I wasn't aware of a linux distro that didn't have perl as part of its
> release installation. I am curious now as to which ones don't? I am
> usually working in suse, rh, ubuntu and debian, which last I checked
> all did have it. So I wonder if you mean ones like puppylinux or small
> usb drive running linux setups. Anyways.. you have my curiosity
> piqued.
> 
> Sincerely,
> Judd Pickell
> 
> On 10/22/07, Kurt Granroth <kurt+plug-discuss at granroth.com> wrote:
>> Here's an esoteric question for those of you wanting a challenge.  How
>> can I turn an arbitrary non-networked bash script into a server?
>>
>> Okay, I'll head a followup question off at the pass... "why would I want
>> to do something insane like turning a bash script into a network
>> server?"  The answer is "because".  Really, there's no reason other than
>> I want to :-P
>>
>> Now netcat handily has the exact option that I need: -e.  With that, I
>> could do something like:
>>
>> while 1; do netcat -l -p 16789 -e myscript.sh; done
>>
>> Alas, the netcat people are reasonable and security conscious folk so
>> they prudently refuse to enable the -e option by default.  In fact, to
>> get that functionality, you must recompile netcat with the
>> -DGAPING_SECURITY_HOLE compile flag!  I love it :)
>>
>> But that doesn't help me because the solution that *I* want would
>> require only software that I can reasonably assume would already be on
>> any Linux system (no compiling!).
>>
>> I suppose I could write a couple line perl script to handle the incoming
>> connections... but it seems sacrilegious for a shell script to require
>> perl.  Plus, not all Linux systems have perl.
>>
>> [x]inted would certainly fit the bill but using that requires root
>> access so that's out.
>>
>> Am I out of luck, here?  Or is there some commonly available utility out
>> there that can open up a socket for me?
>>
>> Kurt
>>
>>
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