== Link: Actually using ed Tom Ryder's [[Actually using ed https://sanctum.geek.nz/arabesque/actually-using-ed/]] ([[via @davecheney https://twitter.com/davecheney/status/774595843026358272]]) is a nice little walk-through of using the Unix _ed_ editor to, well, edit some text. I've used _ed_ a long time ago, and this inspired me to fire it up again to follow along and play around a bit; it was surprising how much I remembered. It was also nice reading about some advanced _ed_ features that I either didn't know about or never used enough to remember. (As always, I find it interesting what's considered basic versus advanced in things like this. To me, address ranges like '_1,10p_' are a basic feature.) I'm not sure I'll ever use _ed_ for anything real (at least outside of a real emergency), but it's nice to know that I still remember enough to find my way around in it. It's also nice that [[the modern GNU version of _ed_ http://www.gnu.org/software/ed/]] has picked up a number of user-friendly features like the _-p_ argument. (The version of _ed_ that I'm acclimatized to is usually called 'UofT ed', and features a bunch of modifications made [[here http://www.utoronto.ca/]] by a number of people, including Henry Spencer. Among other different behaviors from classical ed, it prompts with a '_*_' instead of nothing and has somewhat more friendly error messages.)