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 …
Use redis-cli to monitor redis access and activity. redis-cli monitor or telnet localhost 6379 When the connection has been made, type MONITOR Use Ctrl+C or send SIGINT to get out of redis-cli. To stop the redis session initialized with telnet, simply type QUIT and press …
I often use Webmin and Virtualmin to manage basic stuff on Linux servers, mostly so because others sometime need to change minor settings on these servers, and they may or may not be very familiar with doing things from the CLI. You can, of course, …