[wplug] Line-by-line input from stdin, from a bash script ?

[Pat Barron]

On 10/15/2013 12:51 PM, Eric Cooper wrote:
> On Mon, Oct 14, 2013 at 12:49:14PM -0400, Pat Barron wrote:
>> Does anyone have any favorite methods of doing "line at a time"
>> input from stdin, using a bash script?
> line=$(head -1)
>

I didn't even know that's something you can do...  ;-)

I actually started out trying to use something like this, using shell 
backquotes - but somehow, doing it that way either consumes all of stdin 
(even though it returns only the first line), or closes stdin, and I 
could not get anything other than the first line.  This works, though.

And, after some experimentation, it looks like "read -r" works 
equivalently - and neither one chops trailing whitespace, or squashes 
multiple repeating spaces down to one space (both of which I was afraid 
could happen).  I was afraid I was going to have to tinker around with 
$IFS to get it to leave the spaces alone, but I didn't even need to do 
that (using either the "read -r" method, or the "$()" method).

I actually have my toy web server serving static HTML content, and 
reading/setting cookies at this point.  The next challenge, whenever I 
get a little more spare time, is to see if I can make HTTP "POST" 
requests do something interesting.  It's just a "fun" project, it's 
interesting mainly just to demonstrate that it's possible at all... ;-)  
Thanks to everyone who's provided suggestions!

(BTW, after spending a bunch of time testing things ... turns out that 
typing "GET / HTTP/1.1", over and over again, gets kind of annoying 
after a while.... ;-) )

--Pat.