When you do some bash scripting , this is often useful to get data from webserver because they are a very simple way to exchange data from computer from computer.
to put the data that’s available on a webserver into a $var you just have to use the command :
var=$(wget -qO- http://server.com/file.htm)
this will fetch the data from http://server.com/file.htm in a non verbose way and put it in variable named var .
you can now do whatever you want with that $var , like greping it for example.