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Author Archives: Wolverine
Retro-causal experiment
For a few years I was contemplating ideas about the future. Especially those that give some insights about predictability of future events. When I was working in a cryptocurrency company I was exposed and became interested in markets. I became … Continue reading
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Doomsday paradox
It’s always good to imagine the worst. If you can imagine the worst that can happen, then doing this process repeatedly builds up your shield and hardens yourself against fears if you are able to make the leap to the … Continue reading
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How to brew install OpenSSL 1.0.2p (for Python3.6)
“`brew install –ignore-dependencies -f https://raw.githubusercontent.com/Homebrew/homebrew-core/062799b7a384eddc42be0dfbfd1b63e7127c4d7b/Formula/openssl.rb“`
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Linux users and groups in PostgreSQL database
Standard Linux user and group accounts are defined in three files: /etc/passwd /etc/shadow /etc/group These files store user accounts and group information one per line, as fields separated by “:”. That kind of structure suffices for most user and group … Continue reading
Posted in Administration, Linux
Tagged /etc/passwd, /etc/shadow, accounts, database, group, linux, name service switch, nss, passwd, pgsql, postgresql, shadow, user
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Defining custom vars for Pyramid scaffold
This is a quickie. I was working on creating custom Pyramid scaffold for easing development of multiple REST based microservices that share a common base. Instead of trying to copy, paste, change, I decided to ease my work by creating … Continue reading
Posted in Programming, Pyramid, Python
Tagged custom variables, pyramid, Python, scaffold, vars
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How to resolve “NoMethodError” in Chef
Recently I was given a task to implement Chef on clients infrastructure. What I have learned along the way is that when deploying Chef on existing server infrastructure, there will be almost no two identical systems and that each server … Continue reading
256 color terminal in Konsole running under Mageia
I have stumbled upon a problem with Konsole being incapable of showing 256 colors. The Linux distribution I have experienced this particular problem is Mageia. It turns out that you have to do two things. First, make sure you have … Continue reading
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Robotic Raspberry Pi powered lawn mower
Last week I got my second Raspberry Pi. If you don’t know what it is already, it’s a 25$ fully blown computer with two USB ports, ethernet, video, audio and HDMI port of credit card dimensions. It has sixteen programmable … Continue reading
Posted in Hacking, Programming, Python
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Windows 7 installation under KVM hypervisor
I had to install Windows 7 virtual machine under KVM hypervisor running on Debian 6.0 host server. The goal was to use QCOW2 type file as virtual hard drive. I’m used to take advantage of available tools, so I have … Continue reading