Thanks for all your effort and atleast trying it.
my question is: i have a folder call it as lib and it contains 350 sub-folders. and each subfolder have around 20-30 files. and some of the files have word memory and i would like to replace it with string cache. i would like to run the script at lib folder so that script should check in the all subfolders and replace the memory word with cache word in all file of the subfolders..
it is very very difficult for me..........your help is very much appreciated!!!!