Apple switched the default macOS shell from bash to zsh in Catalina (2019). Most people changed nothing and have been on zsh ever since for interactive use. But if you look at /etc/shells, run which sh, or open …
Open /var/log/auth.log on a public-facing server and you’ll see thousands of lines per day — failed logins, accepted logins, sudo events, cron registrations. The signal you usually care about (who’s brute-forcing me, from where, against which users?) is buried in …
By default every WordPress install since 4.7 leaks usernames over a public, unauthenticated REST endpoint. Anyone — no login, no auth header, just a browser — can hit https://yoursite.com/wp-json/wp/v2/users and get a JSON array of every user the site considers …
Pinboard is the bookmark service hardcore link-collectors swore by for over a decade. The thing was: it was always one person (Maciej Cegłowski), aging gracefully but increasingly out of touch with modern web platforms. Pinboard’s iOS extensions broke after iOS …
You have a backup script. You add it to /etc/crontab. It runs on schedule for a year. Then one day it stops, because the box was suspended for ten minutes during the run window and cron’s “minute X of …