Fetch Personalized Command Explanations with 'um' from Your Terminal

I stumbled upon this page: http://ratfactor.com/cards/um Dave Gauer describes how he has a shell script, um
, that he can use as a man
replacement to help remember how to use a command. Dave’s implementation uses the cards} from his own Wiki, because the um
pages there are “consolidated, I won’t forget about them, it’s easy to list, create, and update pages.” (To be honest, though, I can’t figure out where his um
cards actually are, and what they look like.)
Create FastMail Masked Email Addresses with maskedemail-cli
I’m a happy FastMail user. If you want to be a happy, too, use my referral code for 10% off of your first year (and I’ll get a discount, too!) → https://ref.fm/u21056816 I never used their Masked Email feature, though, because it’s so cumbersome to create these addresses from the web UI. I all but forgot about this feature until today, when I looked for something else in my settings.
From bash to zsh on macOS

In anticipation of macOS 10.15 Catalina, I have changed my shell from bash to zsh. macOS 10.15 will use zsh as the new default, and I was pretty sure that things will break immediately unless I prepare – so I did prepare, and I found the transition very simple. My old bash prompt didn’t work out of the box, so getting a decent prompt with some color and git repository information, I managed to set up sindresorhus/pure to offer asynchronous (!) info like the pwd
’s git metadata.
Sorting Markdown Tables by Column from the Shell
TableFlip doesn’t sort tables by column as of yet. So we all have to resort to other solutions – like shell or Terminal commands. Let’s say your (Multi)Markdown table starts with a header (=2 rows) and has leading pipes like this: You can sort the table by the 3rd column (column “c”) like so: Explanation: