I have a few environments where Certbot (and similar) scripts cannot renew SSL certificates without manual intervention, but I still need to know when the certificates are getting close to their expiration date. This bash script will check a certificate’s expiration date, using cURL, and …
I recently updated my Pop!OS sandbox environment, and noticed that it was running an older version of the VirtualBox Guest Additions. When I tried to update it, it gave me an error message that looked like this: Error constructing proxy for org.gnome.Terminal: /org/gnome/Terminal/Factory0: Failed to …
Jitsi is a lovely piece of software for video meetings. It has come a long way when it comes to setting up a reasonably uncomplicated environment that will let you hold meetings with just about anyone in the world, with participants using smartphones, tablets, and/or …
On most Linux systems, anyone can see everyone else’s processes, running commands, and so on. This can be achieved by simply issuing a ps ax or similar. The same applies to the process monitor command “top”. In certain circumstances, you may want to avoid this. …
Music: Great White, Guns ‘n’ Roses, Pink Floyd, Five Finger Deathpunch, Mötley Crüe, AC/DC, Rammstein Drink coffee, 3L Open 4-6 SSH sessions Do Ubuntu from 16 > 18 > 20 Upgrade platform apps Check logs Stop timer at 7.5h Realize there’s no whiskey available to …
Compare files in the two directories, and only report differences: diff -q path-1/ path-2/ Compare files in the two directories and their sub-directories, only reporting differences: diff -qr path-1/ path-2/ Follow @geek1968 on Instagram
Redmine, Ruby, Passenger-Phusion, and Nginx makes for an extremely confusing situation with dependencies, installation “instructions”, and “mismatching” package versions. Redmine wants Ruby x, your Linux distribution has Ruby y, Passenger-Phusion only works with Ruby z, and you quite often end up in a loop somewhere. …
Flying blind is no fun and many hardware manufacturers are notoriously bad at providing info tools form their hardware for Linux. If you have an LSI-chipped RAID controller, this may come in handy. The `storcli`utility replaces the MegaCLI utility and is provided by Broadcom. You …
Having recently upgraded a small VPS from Ubuntu 18.04.LTS to Ubuntu 20.04.LTS, I ran into a little snag with Emacs and its color-theme (from the emacs-goodies-el package). After some digging, it seems this is now done somewhat differently in Ubuntu 20.04.LTS. This is what my …
During a product launch I recently came across an “interesting” issue involving pdftk (and php-pdftk). Some of the developers had made assumptions (ever heard that one before?) about the operating environment and how things were/are configured. These assumptions were based on a development environment that …