shell or perl script to replace the double quotes with their unicodes

Question

I am having two files names as a.html a.xml in a folder and in a.html file i have a tag

<div class="snippet abstract">
We present a new "model" for multiple-input-multiple-output (MIMO) outdoor wireless fading channels "and" their capacity performance. The proposed model is more general and realistic than the usual independent and identically distributed (i.i.d.) model, and allows us to investigate the "behavior" of channel capacity as a function of the scattering radii at transmitter and receiver, distance between the transmit and receive arrays, and antenna beamwidths and spacing. We show how the MIMO capacity is governed by spatial fading correlation and the condition number of the channel matrix through specific sets of propagation parameters. The proposed model explains the existence of "pinhole" channels which exhibit low spatial fading correlation at both ends of the link but still have poor rank properties, and hence, low ergodic capacity. In fact, the model suggests the existence of a more general family of channels spanning continuously from full rank i.i.d. to low-rank pinhole cases. We suggest guidelines for predicting high rank (and hence, high ergodic capacity) in MIMO channels, and show that even at long ranges, high channel rank can easily be sustained under mild scattering conditions. Finally, we validate our results by simulations using ray tracing techniques. Connections with basic antenna theory are made.
<div><a href="dfgfs">Full Abstract</a>

I have to replace the double quotes inside the tags as below

 <div class="snippet abstract">
We present a new x#&201C;modelx#&201D; for multiple-input-multiple-output (MIMO) outdoor wireless fading channels x#&201C;andx#&201D; their capacity performance. The proposed model is more general and realistic than the usual independent and identically distributed (i.i.d.) model, and allows us to investigate the x#&201C;behaviorx#&201D; of channel capacity as a function of the scattering radii at transmitter and receiver, distance between the transmit and receive arrays, and antenna beamwidths and spacing. We show how the MIMO capacity is governed by spatial fading correlation and the condition number of the channel matrix through specific sets of propagation parameters. The proposed model explains the existence of x#&201D;pinholex#&201D; channels which exhibit low spatial fading correlation at both ends of the link but still have poor rank properties, and hence, low ergodic capacity. In fact, the model suggests the existence of a more general family of channels spanning continuously from full rank i.i.d. to low-rank pinhole cases. We suggest guidelines for predicting high rank (and hence, high ergodic capacity) in MIMO channels, and show that even at long ranges, high channel rank can easily be sustained under mild scattering conditions. Finally, we validate our results by simulations using ray tracing techniques. Connections with basic antenna theory are made.
<div><a href="sdffdf">Full Abstract</a>

But i should replace for the text which is between the

 <div class="snippet abstract">

    <div><a href="/xpl/articleDetails.jsp?

only.

Answer 1

Try the below code...if any clarification let me know

use strict;
use warnings;

open(FILE,"tmp_html.html")or die "$!";



foreach(<FILE>){

        chomp($_);
        if(!(m/\=\"/)){
                $_=~s/\"/#&201C/g;
        }
        print "$_\n";

}