Not a guide to negotiating the back-to-school barbecue, but a handy guide to manipulating text. Ramsay answers key questions like: Why should I care? How can I improve my regex skills? Do I need ...

The first time I ever encountered a regular expression was many years ago now, but I still remember my first thoughts on it: What is this string-like thing? I don’t want to touch it, it looks scary. I ...

When working with regular expressions in a shell script the norm is to use grep or sed or some other external command/program. Since version 3 of bash (released in 2004) there is another option: ...