“An example of a really responsible system is the system the Romans used when they built an arch. The guy who created the arch stood under it as the scaffolding…

I run most of my containers with LXC. Just recently I discovered that there is a automatic way of making snapshots and expiring them. All you have to do is…

I wanted simple and secure shell access to my home lab, which runs many containers. I have physical u2f key from Yubico, so I wanted to have second factor with…

This post will be about Folding@home. If you don’t know what Folding@home is, please read https://tomasz.jarosik.online/2020/03/donate-computing-power-for-covid-19-research/ first. Big thank you to everyone who joined team 255025 ( https://stats.foldingathome.org/team/255025 ). The…

How to deal with phishing and scammers. Currently more people use the Internet as they have to stay at home. But there are some people out there who will use…

If you are reading this, you have a computer. How do you use it? I bet your computer can do much more that you think. And I want to present…

Really good explanations of algorithms at https://cp-algorithms.com (I recently went through https://cp-algorithms.com/data_structures/segment_tree.html, so my opinion is mostly based on that article). “Nothing is more responsible for ‘good old days’ then…

There is a fascinating talk on youtube: https://www.youtube.com/watch?v=H62hZJVqs2o It’s rare thing to see system working for so long completely remotely. Worth watching! I’m usually curios about how did it happen.…

Objective I wanted to have few goals met when connecting to my VPN:1. Devices connected to VPN must use custom 10.10.10.10 DNS server2. Some kind of filtering must be available…

Performance matters This is a talk I like and it really gave me a better understanding of “measurement bias”. The improvement (or not) can be simply because of a specific…