I'm auditing a large group of text files and I need to identify lines that do NOT contain a particular text string (for example, find all rows not containing the text "xyz"). XYZ may or may not occur on a word boundary. I have not been able to figure out the regexp to accomplish this.

Alternatively, if the hyper-search returned every line with a count of the number of occurences per-line prepended to each row, that would solve it too.

Thanks!