George Georgovassilis writes about information technology architecture
Sam Harris discusses in an episode of his podcast [1 ] the damage done by public discussions in which actors conceal their true motivation behind a series of orchestrated questions. For example, the statement "cars are responsible for climate change" is easily disguised as a series of straight, indirect or suggestive questions: "why are global … Continue reading Just asking questions
Yesterday (early August 2021) my Ubuntu 20.04 installation started configuring all network interfaces (wifi, ethernet) with IPv4 addresses from the wrong network segment block, namely 192.168.0.x. IPv6 still worked fine. I didn't figure out whether that's due to a change in the router or the OS (I suspect the router, because the situation improved when … Continue reading Ubuntu 20.04 getting wrong IP address
While playing around with fluentd the need came up to extract data nested deep into the logging input and add it as a flat field to the output. If you're not familiar with fluentd (I'm not): it's similar to logstash in that it collects logs from a variety of sources, filters, transforms and categorises them … Continue reading Extracting field with fluentd
Push-pull amplifiers [1] are great for driving heavy loads because they divide work among two transistors and produce a centred output signal that can freely move up or down around the centre. Simple push-pull amplifier When powering the amplifier with a single power source (eg. a 12V battery), then the output signal oscillates around half … Continue reading Double push-pull amplifier with cross over compensation
What user sjr said on https://stackoverflow.com/questions/4643438/how-to-search-contents-of-multiple-pdf-files find /path -name '*.pdf' -exec sh -c 'pdftotext "{}" - | grep --with-filename --label="{}" --color "your pattern"' \;
George's Techblog 