Notes Notes about different stuff

Here you can find attempts to send messages to users who do not exist on this server — read more

These are e-mail addresses that sent spam/scam/phishing emails to me. — read more

These are spammers (or hackers) trying to send email from my server — read more

It is possible, no matter what your friendly AI chatbot tells you — read more

On the main page of this blog (which lists all posts), right-click an empty place and select "View Page Source (Ctrl+U)". What do you see? An RSS feed! (or, rather, it's technically an Atom feed, but who actually cares) But how? And... Why?!.. — read more

Does your list of nameservers change often? — read more

This is actually surprisingly easy — read more

And any AI that tells you otherwise is wrong — read more

How to make CoreDNS deployment in your multi-node k3s cluster more resilient to node failures — read more

Has one benefit — read more

If you ask your friendly chat bot how to do self-expiring DNS records in PowerDNS Authoritative Server, it will offer you these three options: — read more

Running NGINX in Kubernetes reveals a subtle DNS resolution quirk — read more

How to send a message to your friend over insecure lines and be sure that only they can read it — read more

Playing with a fancy old technology — read more

Let's see how recently released video "speed-up" and smoothing program Microsoft Hyperlapse can deal with my record of flying in clouds — read more

These are logins and passwords of last 50k login attempts into my server. — read more

When using k8s as geo-distributed CDN, instead of how it was supposed to be used — read more

If what AI suggested doesn't work — read more

is easier than you might think — read more

is easy, even if your friendly AI tells you otherwise — read more

I accidentally ᚦᛖ᛫ᚱᚢᚾᛖᛋ — read more

Those which are not available via UI — read more

Good monologue about modern technology and our reaction on it — read more

A funny video about Norway and norwegians — read more

You can write them here — read more

without losing FPS — read more

Some editors let you set tab size in pixels — read more

Might be useful if you're running your own DNSBL — read more

Why use someone else's Dynamic DNS server, if you can easily run your own? — read more

One of reasons why people switch from sendmail to postfix is ease of configuration. — read more

Experience after playing a flash game — read more

A website with a provoking name features funny games — read more

On Linux, you can have different keyboard layouts for different physical keyboards. How? — read more

How to transfer a terabyte sparse file (of which only a hundred megabytes is used) from one machine to another — read more

A webpage with a list of free games for Windows — read more

For when you're on limited environment but want to see a process tree — read more

If you missed them — read more

How to generate them, so you could store them in your head — read more

If you need a quick place to write down your thoughts and you find yourself in front of a web browser, then instead of launching notepad.exe you might want to type data:text/html,<textarea> in the address bar — read more

Click this link to visit a random note — read more

All these /bin, /usr, /local, etc... — read more

TL;DR: --totals --file=/dev/null | grep 'Total bytes written' — read more

a static blog generator which tries to do as little as possible on the server side — read more

After some time of pondering, I switched to GitHub-Flavoured Markdown (GFM) — read more

From: Patrick J. LoPresti
Subject: The True Path (long) — read more

Or should I say "why-too-key" to raise more confusion? — read more

If you need to set it programmatically — read more

a 2.2k library to hilight any code — read more

How to disable mail receiving by local users without deleting their accounts — read more

Signing sendmail messages with DKIM using OpenDKIM is easier then you think! — read more

By default sendmail is configured in such a way that any program running on localhost can send an email without password, and none from another computer can do that. But what if you want to change that? — read more

So they weren't rejected by dnsbl spam filter — read more

for example, to see them both in original and in your native language — read more

TL;DR: printf 'e[3J' — read more

Small script to help you debug this crypting xcodebuild error: exportArchive: Provisioning profile "XXX" doesn't include signing certificate "YYY" — read more

If you happen to often switch between "dark" and "light" color themes on your system, you might be lucky enough that your browser picks it up properly and conveys to web sites — read more

If you happen to often switch KDE desktop themes and work in konsole (KDE terminal emulator) a lot, you might want to switch konsole color schemes, too. Instead of messing with "Manage Profiles" dialog and changing profile for each open konsole tab every time, you might want to automate it a bit — read more

TL;DR: git rebase -i, edit, git reset HEAD~ and create new commits — read more

Unlike sector-based one, this uses more complex logic, but simpler maps — read more

Now you can intercept other ships! They can intercept you, and each others, too! — read more

TL;DR: ls <Esc>* — read more

Now your game doesn't disappear as soon as you reload the page, and also you can complete missions! — read more

Now you can participate in "useless activity" together with outher ships — read more

Ok, it's actually barter, but now you have a reason to travel. — read more

Now your ship can have a "radar" component, where you can look at a star system — read more

Now you can walk on your ship... And others, too — read more

Idea it to make a mix of space1d and space2d2 games (I'm not very good at naming things) — read more

by limiting its charge to 90% — read more

Due to reorganisation at my previous place of work, several people were offered to leave, including me. — read more

A small shell script to generate one-time passwords, in bash, using oathtool — read more

If you're (un)lucky and your employer stores all employees' contact data in a spreadsheet (instead of vcards or not giving you easy access to it at all), you can easily convert it to VCF (VCard Format file) and upload to your private WebDAV server! How? Pretty easy — read more

properly this time — read more

HTML parody of an OS which was popular when we were young and Internet was new — read more

this game got its own (sub)domain! — read more

It's playable now… if you can call it that :-) — read more

A space trading game without money — read more

One star is good, but more stars is better — read more

Making a properly balanced economy simulator is pretty hard, as it turns out. But can I make a simpler 2d game? — read more

Another attempt to add something nice to this blog — read more

My first experience in getting a job — read more

How to automate it if you host your mail yourself — read more

Now you can't go outside the ship — read more

For those cases when you need to implement something GoogleMaps-like — read more

a simple unit file to keep a permanent SSH connection — read more

Access for robots only — read more

TL;DR: cat "${1:-/dev/stdin}" — read more

A nicer version of CSS-only 2D background gradient — read more

Let's add a colorful background to this blog, hm? — read more

A CSS-only version of fancy 2D background gradient — read more

with the help of script console — read more

Maybe agent's IP is not among allowed ones? — read more

Also known for "First actual case of bug being found" note — read more

how to minimize them about 10-fold — read more

A small language session — read more

How reading one habr.com blog post caused a chain of events leading up to me writing a good documentation for a pet project — read more

A good article that summarizes my own thoughts on hardening browser on Linux — read more

Star Wars in ASCII art — read more

Adding some action to the simple game prototype. — read more

Ships are now vindictive and base their decisions (attack or trade) based on previous player behavior — read more

Changes in physics — read more

more choices — read more

The game is playable now! — read more

Moving forward with a simple game. — read more

One step forward, one step back — read more

Ships now have colors and like you from the first encounter if your ships color is close to theirs. But still, to change it you need to decrease your karma below -1. — read more

Short memo about a good program — read more

How I organized backups of my files — read more

Short memo about a good program — read more

...then you're doing it wrong. — read more

You probably know ddp command in Vim to exchange two lines. But what if you want to exchange only parts of these lines? — read more

An idea for an evil prank on your Vim-loving friend. — read more

Even if OS sees a storage device as SSD and refuses to defrag it - you might know better — read more

With dehydrated being 12th container to be added to my infra, this is 13th. — read more

How to configure Postfix to skip milter for incoming messages — read more

If you ever wanted to see how validity of DKIM signature will be affected by changing email headers and / or message body — read more

How hard can it be? Using only nginx itself! — read more

Sometimes it's wrong... completely... sometimes... — read more

A quick note about a funny site and a video featuring it. — read more

a humble beginning — read more

Let's have something to look at! — read more

FPV mode, so we can walk on the ship — read more

Changing the engine — read more

Let's build a real ship — read more

Now we want to have a character (a pilot) to walk on the ship. — read more

Let's put a camera onto the ship, to get some FPV experience — read more

Game about space which will be more fun to make than to play. — read more

My first (almost) finished game — read more

First step is moving the ship — read more

What I want to create and what to base on — read more

A FUSE module that shows a list of files as one big file. — read more

When you downloaded them separately — read more

When you use scripting languages and want to squeeze some performance. — read more

In case you need to switch between various OSes (be it Windows and Linux, or just various Linux distros). — read more

TL;DR: sudo hdparm --repair-sector SECTOR /dev/sdx — read more

Because keyboards were hard — read more

For all your slack needs — read more

How would it look — read more

A brief dive into a history of early web — read more

An interesting article showing how credit cards appeared — read more

Interesting article about how software was distributed in old times. — read more

Interview (with a transcript) with its creator. — read more

It was the first programming language I was learning — read more

Interesting article about speed of modern computers — read more

An interesting article about designing of common UI elements which we now are taking for granted. — read more

For when you want working dorectory (:dir) be a parameter, just like variable (:var) — read more

How it was done. 10 days of obfurscated Javascript. — read more

Suggestion to improve its usability — read more

TL;DR: it's an app called "dupd" — read more

TL;DR: When running scripts with bash -x, use true … instead of echo …, to avoid duplicate output — read more

set -e might work not as you expected inside (parentheses). — read more

busybox has a nice http webserver module, even with cgi support - and you can use it to upload files, too — read more

How to get a random port number for a small service — read more

Interesting dive into how Internet became the mess that it is now — read more

Is it hard to download any Chromium build? — read more

A bit of policy magic to avoid writing policy — read more

TL;DR: make a cgroup and assign processes into them, in the systemd .service file — read more

TL;DR: copy libs to /var/cfengine/lib/postgresql/ and extensions - to /var/cfengine/share/postgresql/extension. — read more

TL;DR: use tar and pipe to stdout! — read more

Automatically backup files on media mount, using usbmount — read more

We have one now — read more

Compatibility patch — read more

Github user with a bunch of interesting Javascript projects/repos — read more

RIP Douglas Engelbart, the person who shaped the modern computing. Oh, and a computer mouse. — read more

Note that to get command line on iPhone, you need to jailbreak it first. — read more

Helping you to get many big images from flickr to your xscreensaver — read more

When SSH is your poor man's VPN — read more

You brought technology closer to people — read more

deb packages for all versions starting with 3.5 — read more

Good library for those willing to implement TeX formulas in their blogs — read more

One of creators of C programming language passed away today — read more

That was a google query I struggled to find answer to — read more

vim plugin for easy commenting — read more

Soon after change of owner in Opera, just another round of layoffs rolled through the company, this time affecting also me. — read more

I had a dream. A nightmare, actually. — read more

Today I've accompanied my old friend on his last journey. — read more

Currently (Opera 15-18), when you start Opera on Windows, it spawns itself again and terminates the process you started — so you can't easily wait until the Opera you've started quit. Or can you? — read more

one-line bash function to draw a nice progress bar — read more

Classic which can never be forgotten is just few clicks away. — read more

If you have a domain and don't want to be blocked for sending spam. — read more

What do I think about it and how I'd like it to be. — read more

EuroEnglish - Ze drem vil finali kum tru! — read more

Greately inspired by $if(...) conditions in Winamp Advanced Title Formatting, I wanted to add something like this to Python. — read more

TL;DR: 3> >(command) — read more

An interesting article on how to save space and bandwidth — read more

A helpful guide to a simple programming language I still don't comprehend — read more

probably you've already heard about MiniCodeEditor — jsFiddle implementation in 161+ bytes. Below is my addition to that jsgolf — read more

How I organised backups of my machine — read more

FanlessTech.com – a website about fanless computers — read more

An interesting article at imgur.net — read more

These are the guys who are spamming me the most. — read more

Started using new programming language, I feel irritated and want to blog about it :) — read more

How to change it, if it matters — read more

I'd like to add "...and live in it", but it's only a game, so it's more like "...and dream of it" — read more

How much can you tease your brain? — read more

If you know what line to delete... — read more

Explore data about all countries in the world since 1800 — read more

How to copy-paste text from one place to another, replacing what's already there — read more