->Need to upload a file from Unix box(Putty) to a website.

->Tried Wget and curl to upload a file to that website, when ever i am trying to fire the command its redirecting to Login page.

->for this purpose i have used cookies option to pass the Login information next time, but its giving empty cookie file and returning entire HTML page.

->used various options like redirecting,load cookies, for wget and curl, but everything is going in vain.

->Normally browser login process for that website is :

1.Login page www.example1.com/login and provide username and password
2.redirected to another URL www.example2.asp and after clicking on a folder icon.
3.it is getting redirected to another URL www.example3.com/folders.do?id=12433434324

i have to upload the file in the third URL and to a particular folder in that page, folders are containing different ids.

Please share your knowledge on this and provide solution as best as you can ,thanks

Do you own this server or web site?

The best solution is to access the folder location where these files are located at without trying to bypass any third party stuff.

No its clients library, we have credentials to that server, manually we are uploading files through browser, just wanted to automate this process

when ever i am trying to give the folder url, its getting redirected to login page

I agree the easiest most efficient solution is to access your upload directory via FTPS, SFTP, SCP or any other suchlike means instead of trying to figure out how to use credentials and HTTP POST. Note the most important thing about your initial post that's wrong is that you only tell us (lotsa words) what you have tried. What you should do instead is show exactly (post code) what you have tried.