I need to be able to search several thousand XHTML and XML files and see a list of files that do not contain the following string on the first line:
<?xml version="1.0" encoding="utf-8"?>
How would I go about doing this? I thought I could do this in Notepad++ using the Search in Files function, but I do not see any way to look for a string that is not found and/or properly formatted and have it output a list of files.