PySerialURL is a program to generate serialized URLs.

(You must have installed Python 2.x and Tkinter 8.x, which should be in all Linux distributions)

Paste an URL and change the serial number into #

Enter a start number, an end number and the length of the serial number

Press OK

This will generate a file pyserialurl.txt in your home directory with

http://www.xyz.com/file001.rar

...

http://www.xyz.com/file100.rar

which you can import into a download manager like D4X (file -> find links in file)