Here is my problem statement :
There is a folder with many html and text files. I need to recursively go through each one of them and find all kinds of file extensions referenced in these html/text files like .jpg, .tif, .png etc
The problem is I don't have a defined list of the extensions I want to search for.
What would be the best way to achieve this using a shell script ?
Coming up with a Reg-ex which would essentially search for all occurrences of a dot followed by 3 or 4 letters, and filtering out the ones which end with a space or a comma, or a quote etc ??
Any suggestions would be helpful.