javascript automation for files move into another folder

I have a folder in my server which contains some files. These are automated that means everyday we get new files automatically which will overwrite the old ones. So want to take a back up for this data. How can i copy all these files in to a another folder by renaming the files with current date while copying.

ex : i have a folder named folder1 which contains 4 files. path for this folder is home/webapps/project1/folder1

aaa.csv
bbb.csv
ccc.csv
ddd.csv

now i want to copy all these four files in to a different folder named folder2. path for this folder is home/webapps/project1/folder2. while copying these files i want to rename each file and add the current date to the file. so my file names in folder2 should be..

aaa091012.csv
bbb091012.csv
ccc091012.csv
ddd091012.csv

I want to write a script for this using javascript. Please give me some idea or some sample scripts related to this.