How to make multiple threads of currently running shell script?

I am developing a project of simple download scheduler in Linux using the LYNX command line browser.
Basically this application will work in 4 steps AUTOMATICALLY (i.e. @ pre-specified time):
1) to connect to the internet
2) Go to download page, and login using the LYNX command line web browser.
3) Start download.
4) disconnect from web, save any uncomplete downloads , halt the computer.

All works smoothly. But what if I could make multiple threads of the script running "wget" command ??

Obviously my speed of downloading is going to be increased.

I am ready if I need to create individual script for all wget commands.

If this is not possible please give me suggestions that how can I create multiple instances of downloading process.

Your problem is not threading (it would be, but you are not even at that stage yet). Your problem here is that wget and lynx have no support, as far as I know, to do what you want. Both will take an URL and fetch it, but there's no way to tell wget to download only a portion of a given file (again, as far as I know), the same goes for lynx.

Why not just use something like axel?

Yeah , but what is axel ? I don't knw about it at all..can yu give me a link 4 tht or some explaination please ?

Are you incapable of using web search ?.
I too read that post yesterday, and it took 2 minutes to find all sorts of info about axel - and other possible options.

http://lmgtfy.com/?q=axel

The third link that comes up is your answer. If you want to increase the download speed for your download by splitting the files into different segments and downloading them simultaneously, you would need download accelerator of some kind. A browser will not do that.

Dear all friends,
Can curl help me in which i'm interestred ??

@i92guboj,

First of all thanks for your suggestion.
axel is really good !!
Yeah i knw smthng by nt everything, so improper knowledge would pinch me.but as this download scheduler is my semester project . so i HAVE TO show some kind of coding in it.

Ri8 now i 've 2 ideas in my mind ...
1) sync command
AND ...
2) curl command.
Now can multithreading help me ??

@ i92guboj :

by using the system("<command>"); i am able to call sys cmds from C.
now I want to make multipl threads of downloading so cURL or wget which is your suggestion ? another command is also welcomed..

any one can help me...

Can you please spell your words out correctly? I find your posting
style rather irritating.

@ Tinkster : for sure .
----------------------------

Please tell me the perfect pair from these >

to schedule : at, crontab .. ???
&
to download any particular file from given URL : wget, cURL ...

anyone, please...