Introduction #
We have just come across a great program which allows one to search for a string, using Regex, and replace the string across multiple files.

In the left pane, simply specify the folder and the pattern. Then click Find Files to get a list of all the files.
In the right pane, enter the regular expression you want to search for. Then enter the text you want to replace it with. Finally, click Find.
Accept the changes as you see fit; you’re given the option to replace each occurrence of the text (one at a time) using Replace, all occurrences in the current file using This file, or all occurrences in all files using All files.
Once the required changes are accepted, just press the save icon in the top left hand corner. All the changed files will be saved and the search and replace is complete. It’s quick and easy.