newbie pipe question

[Michael]

linuxnooby at yahoo.com.au wrote:

> Hi
> 
> I want to write a python script that accepts input ( a single line of
> text) from another program (squid proxy) and sends back output ( a
> single line of text). I am not sure how to go about this

With a squid redirector (which is presumably what you mean) the things you
need to do are pretty simple:
   * Read a line of text as sent to you by squid on stdin
   * do some transform (if appropriate)
   * Write the line back to stdout

The key thing you want to ensure is that you're not buffered. ie make sure
at the top of your python script you have "-u" after the python path.
ie your minimal script should look something like:

#!/usr/bin/python -u

import sys

while 1:
   line = sys.stdin.readline()
   # do something
   sys.stdout.write(line)

Really quite simple you'll be pleased to see.

Regards,


Michael.
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