Learn RegEx Interactively

Lauren Coates of LSU’s Digital Scholar’s Lab sent along a link to Regexr, which allows you to teach yourself regex interactively. I’ve seen other sites that do this, but Regexr has a great UI. Time to go test some regex problems I’ve had lately to see if I can’t figure them out…


If you want to find all the HTML, or XML, tags in a document, `grep` the following:


In a GUI app you can choose find all or replace all (with whatever you like).