The following script can read through a list of urls [seperated by a return], and download them, for example, pretend that the following is a .txt file:
http://www.extramaster.net/LinesAndLinesOfCode.jpg http://www.extramaster.net/GooglePlusBrand.jpg
It is then ran through the script, and "LinesAndLinesOfCode.jpg", "GooglePlusBrand.jpg" will be downloaded into the directory in which the script and the .txt file is placed in
The code is as follows: