Random Password Generator (POMjs)
POMjs is an open and uncomplicated Random Password Generator written in Javascript and HTML. We all love secure and random passwords, and sometimes you just need to make one up …
Sysadmin
Zimbra running out of disk space after update and zmstat
Have you seen a sudden increase in the disk usage for your Zimbra environment? Patching or re-starting Zimbra may very well be the culprit. Upgrading an instance of Zimbra is …
Compare files and directories recursively using diff
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/ …
Improving your Nextcloud upgrade experience
Nextcloud, a truly wonderful open source project, allows you to create your own co-lab hub. You can choose to host it yourself, or get a Nextcloud instance at one of …
Ubuntu 20.04, Nginx, Redmine, Ruby, and Passenger-Phusion confusion
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 …
Checking LSI RAID storage status in Linux
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 …
Where did my Emacs color-theme go in Ubuntu 20.04.LTS?!
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, …
Checksum of file using Windows certutil
After getting files from a remote source, it is often a good idea to get some sort of fingerprint or checksum of the file, and verify it against a known …
pdftk and php-pdftk on Ubuntu 18.04 without using snap
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 …
Monitoring redis access and activity
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 …