Hello Mohamed, I'm glad this article was helpful to you, and thank you very much for bringing up regex in capturing groups. In my case, for example, I usually use awk -vFPAT='([^,]*)|("[^"]+")' in order to use regex. The value of FPAT is a string that describes a regular expression and how a given field should be made of. I'll be soon adding this example in the article. Hope I answered your question, if not, please let me know.