Shell Programming and Scripting

Hi Folks,

I have one curious case. There are list of following files placed in one directory such as... And updated each month.

files.JAN09.csv files.FEB09.csv files.MAR09.csv .....

Now, I need to move a specific files; i.e,

For this month, I need to move only OCT09, NOV09, DEC09, JAN10;
For next month, I need to move only NOV09, DEC09, JAN10, FEB10;
And for next, DEC09, JAN10, MAR10, APR10;

Could any experts help me to code on Shell Script?

Thanks in advance.

try (with GNU date)

Code:

dest_path=/some/path/to/archive
for month in 5 4 3 2
do
	file_date=$(date -d "$month month ago" +"%b%y" | tr '[a-z]' '[A-Z]')
	mv files.${file_date}.csv ${dest_path} 2>/dev/null && echo "files.${file_date}.csv has been moved"  || echo "file files.${file_date}.csv not found"
done