Linux/BSD command line wizardry: Learn to think in sed, awk, and grep | Ars Technica

Linux/BSD command line wizardry: Learn to think in sed, awk, and grep | Ars Technica https://arstechnica.com/gadgets/2021/08/linux-bsd-command-line-101-using-awk-sed-and-grep-in-the-terminal/