Mastering Sed: Capture the Flags

In this tutorial, we’ll explore sed’s useful command-line flags. Without CLI flags, sed’s clunky. Oh you want to perform find and replace on a file? First you need to create a temp file, and don’t forget to clean it up! Tedious. Knowing these sed flags makes our life fast and easy. I know, grinding through facts like what each flag does is tedious. Plus why bother remembering when we can always look at the man page. All valid points. That’s why this tutorial, like all of my tutorials, is interactive. Each flag we go through comes with an example that you can try yourself in your own terminal. Even if all you do is copy and paste the examples and skip the dry reading, it’s worth. Trying an example primes your brain for the next time you see something similar. Your brain will think, "Hey, didn’t I do something like this with some sed flag that one time on CodeFaster? Yeah, I did, let me look it up again" You’ll come back, find the flag, actually read the short explaination to understand…