https://yanevskiv.com/ 2026-04-22T12:16:02+00:00 https://yanevskiv.com/ https://yanevskiv.com/_media/logo.png text/html 2026-04-21T20:59:52+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/qubit?rev=1776805192&do=diff Qubit Qubit is the quantum computing equivalent of a bit. A classical bit can be 0 or 1. There are no probabilities involved at all. If a bit is 1, then it's 1 with 100% probability and 0 with 0% probability. Conversely if a bit is 0, then it's 1 with 0% probability and $\lvert 0\rangle$$\lvert 1\rangle$$\lvert 0\rangle$$\lvert 1\rangle$$\lvert\psi\rangle$$$\lvert\psi\rangle = a\lvert 0\rangle + b\lvert 1\rangle$$$a$$b$$\lvert 0\rangle$$a = \frac{\sqrt 2}{2} + i\frac{\sqrt 2}{2}$$\lvert 1\rang… text/html 2026-04-21T20:46:53+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/?image=chatgpt_image_apr_21_2026_10_43_37_pm.png&ns=0&rev=1776804413&tab_details=history&media_do=diff&do=media <img src="https://yanevskiv.com/_media/chatgpt_image_apr_21_2026_10_43_37_pm.png?w=500&amp;h=500&amp;tok=ce88fb" alt="chatgpt_image_apr_21_2026_10_43_37_pm.png" loading="lazy" width="500" height="500" /> text/html 2026-03-21T23:19:46+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/git?rev=1774135186&do=diff Git Git is a tool for managing repositories. Repositories are like folders, except it's easier to track the changes that happen inside them. Think of a project you've been working on e.g. a game in written in C++. You've been working on your game for weeks and now you have quite a bit of code. You're starting to be a little afraid of making changes text/html 2026-03-21T18:38:24+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/hpc?rev=1774118304&do=diff HPC HPC (High-performance computing) is an area of programming concerned with performance optimization. It's about making the most out of hardware. text/html 2026-03-21T18:36:40+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/perf?rev=1774118200&do=diff perf perf is a profiling tool used in high-performance computing. You int main() { } stat ls Common issues "Error: No supported events found" text/html 2026-03-17T15:59:06+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-software-engineering-concepts?rev=1773763146&do=diff List of software engineering concepts * brooks-law * parkinsons-law * kanban * xp-programming * agile * Test-driven development * CI/CD * devops * blue-green-deployment * canary-release * unit-test * regression * test-automation * kanban * feature-flag * production * ab-testing * hotfix * feature-branch * eat-your-own-dog-food * spike-solution * solid * liskov-substitution-principle * smart-and-vapid * devops * incremental-build-model * prototype * artifact * goodha… text/html 2026-03-17T11:09:15+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/tmp?rev=1773745755&do=diff text/html 2026-03-16T12:31:26+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-commands?rev=1773664286&do=diff List of commands * List of util-linux commands * List of coreutils commands * List of internal Bash shell commands * List of LaTeX commands * List of system commands * arduino-cli text/html 2026-03-16T12:31:20+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-system-commands?rev=1773664280&do=diff List of system commands * ifupdown text/html 2026-03-16T12:30:40+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-latex-commands?rev=1773664240&do=diff List of LaTeX commands * pdflatex text/html 2026-03-16T08:38:05+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/semaphore?rev=1773650285&do=diff Semaphore Semaphore is a synchronization primitive. It's used to control thread execution in multithreaded environments. A semaphore acts like an integer. An integer supports two well-known opeartions: increment i++ and decrement i--. A semaphore works in a similar way, except a semaphore cannot be decremented below zero. This is because semaphore takes action to protect its value against bankrupcy by taking hostage of threads that attempt to make it negative. text/html 2026-03-16T01:55:52+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/numbers-every-programmer-should-know?rev=1773626152&do=diff Numbers every programmer should know Numbers every programmer should know is a short document listing latencies of various computer operations. The list is given by a computer scientist Jeff Dean. It illustrates how various high-level operations exponentially take longer time to perform compared to various low-level operations. text/html 2026-03-16T01:48:44+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/home?rev=1773625724&do=diff Home Hi, I'm Ivan! This website is my encyclopedia about various technical topics. The topics I cover on this wiki are mostly related to technology, but sometimes I'll also write about science and mathematics. I'm an embedded software engineer. Therefore, most of the articles on this website are going to be written from that lens. For example, if I make an analogy, it's probably going to be related to embedded engineering in some way. I use text/html 2026-03-16T01:48:29+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-algorithms?rev=1773625709&do=diff List of algorithms * selection-sort * bubble-sort * insert-sort * merge-sort * quick-sort * 3d-rotation text/html 2026-03-16T01:48:04+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-mathematical-topics?rev=1773625684&do=diff List of mathematical topics * set * monoid * vector-space * hilbert-space text/html 2026-03-16T01:43:13+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/coreutils?rev=1773625393&do=diff List of coreutils commands coreutils (or GNU core utilities) are a set of commands inherited from Unix and implemented by the GNU project. These commands are pretty much available on all GNU/Linux systems, no matter the distro. The following is a table of coreutil commands. You can use text/html 2026-03-16T01:43:04+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/util-linux?rev=1773625384&do=diff List of util-linux commands util-linux is a collection of commands provided by the Linux Kernel Organization. A similar set of commands is GNU core utilities. The following are commands provided by until-linux. You can do man <command> or use the --help option to see what each command does. text/html 2026-03-16T01:42:43+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-tools?rev=1773625363&do=diff List of tools * Git * Docker * systemd * Terminal * Shell * LaTeX * Tmux * SSH * VPS * qemu * gcc * gdb * nvim text/html 2026-03-16T01:41:25+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/terminal?rev=1773625285&do=diff Terminal Terminal is conceptually anything that looks like a keyboard + a screen attached to a teletype device (TTY). It gives humans the ability to use the teletype device. When you type something in a terminal, the terminal sends your characters to the teletype device. When a teletype device responds, the terminal prints the result back to you. A terminal can also reinterpret the characters coming from the teletype device and change its behavior in some way (e.g. change cursor location or tu… text/html 2026-03-16T01:40:27+00:00 Ivan Janevski (yanevskiv@undisclosed.example.com) https://yanevskiv.com/list-of-parallel-computing-concepts?rev=1773625227&do=diff List of parallel computing concepts * synchronization-primitve * Semaphore * mutex * Qubit * Qubit gate * amdahls-law * gustafsons-law * cache-coherence * cuda * openmp * queuing-theory * lock-free-queue * numa * false-sharing * aba-problem * trace-monoid * hazard-pointer * cache-coherence * roofline-model * numa * embarrassingly-parallel * fork-join-model * rcu * lock * lock-convoy * lock-contention * spinlock * smp * memory-order * cas