Notes

Resolve the TqdmWarning: IProgress not found by upgrading jupyter, ipywidgets, and related packages.

Convert a Jupyter notebook to a clean HTML file with output only.

Register and list Jupyter kernels using venv

Verify CUDA availability, install the CUDA Toolkit compiler (nvcc), configure environment variables, and confirm GPU access from Python.

Install Ollama, run it as a systemd service, pull models, and call the local API from curl and Python.

Set up Coqui XTTS v2 locally on GPU and turn a text script into a single-voice narration MP3, with sentence chunking for the 250 character limit.

Docker-based workflow for using Qdrant as a vector database in a RAG system, including manifest export, database source export, embedding execution, production deployment, and safe reindex checks.

Run Claude Code inside a reusable Docker container, scoped to one mounted project with persistent subscription auth.

Run Hermes inside Docker on the local Arch host with persistent host data and a limited mounted workspace.

Set up Hermes on a separate local Ubuntu device, connect over SSH, manage sessions, and optionally expose a local dev site through a reverse tunnel.

Install Codex CLI on the Arch host, configure global and repo instructions, and start a local workspace-write coding session.

Use Git worktree slots, isolated Docker app containers, shared local infra, and normal GitHub PRs for parallel local agent work.

Initial C++ development setup on Ubuntu with GCC, CMake, GDB, Ninja, and VS Code.

Keyboard shortcuts for multiline selection, cut and paste, and fast movement in long files in nano.

Create, package, install, and publish a small VS Code extension that opens .note.md files in a custom rendered Markdown viewer.

Keyboard-driven VS Code workflow with a clean UI, visible editor tabs, Explorer navigation, and a small custom shortcut set.

Hide generated folders from the VS Code Explorer and exclude them from search results.

Install several Python versions side by side on Ubuntu using the deadsnakes PPA, then create a venv pinned to a specific version.

Debug Python import paths, regular packages, namespace packages, __init__.py behavior, and FastAPI backend import roots.

Install Node Version Manager on Ubuntu, then install and switch between Node.js versions per user without touching system packages.

Steps to discard all tracked and untracked local changes, then switch to another branch.

View commit history, manage local and remote branches, pull new branches, and merge into main.

Initialize a local repo, set the main branch, connect to a remote, and push for the first time.

Fix a divergent main branch when the remote main changed and the local main also has an unpushed commit.

A fully local Git workflow using a bare .git directory as the central remote, with no dependency on any external hosting.

Set up GitHub SSH authentication without repeated username and token prompts, using separate keys for local development and EC2.

Fix 'ssh: connect to github.com port 22: Connection timed out' on networks that block port 22 by routing Git SSH through ssh.github.com on port 443.

Use git reset --mixed HEAD~1 to remove the last commit while keeping its changes in the working tree, ready to fix and re-commit.

The -f flag means "file" in docker compose but "force" in docker rm: point compose at a non-default compose file, and force-remove running containers.

Fix a broken network where Docker's default 172.x bridge overlaps the Wi-Fi subnet, by pinning Docker to safe 10.x pools in daemon.json.

Docker Compose commands on a Linux host for starting, entering, inspecting, and stopping services.

Development setup with Ubuntu based Docker containers for backend, frontend, Redis, MySQL, Celery worker, and Celery beat.

Understand Docker Hub, images, containers, tags, mounts, ports, startup commands, and common docker run flags.

Check Linux memory, disk, Docker cache, containerd storage, and live CPU usage, then clean Docker safely on servers and local dev machines.

Render a Manim Community scene through the official Docker image, bind mounting the project so the output video lands locally.

Add a new key pair to a running EC2 instance without losing existing access: key creation in AWS, local setup, public key extraction, and authorized_keys update.

Find the IPv4 address of a Linux machine on the local network so another device can reach it over SSH.

Why a LAN device connects over SSH with just a password while EC2 needs a .pem key: reachability and authentication are separate, independent concerns.

Stop chasing a changing DHCP IP: reach a Linux host on the local network by a stable .local mDNS name or a DHCP reservation, and pick the right interface.

Connect from a Linux host to another device on the same local network over SSH, using a named host alias in ~/.ssh/config.

Configure and connect to an AWS EC2 instance over SSH from a Linux host using a named host alias in ~/.ssh/config.

Move or copy folders between two Linux machines on the same network using SSH for the connection and rsync for the transfer, with a dry-run and verify step.

End-to-end Docker Compose production deployment on an Ubuntu server: install Docker, run the stack, keep after reboots with systemd, and day-to-day rebuild flows.

Add a persistent swap file to a small EC2 instance so memory spikes degrade into a slowdown instead of a hard OOM freeze that kills SSH access.

Deploy private n8n on EC2 with Docker Compose and build a daily arXiv research digest workflow delivered by email.

Deploy a Next.js frontend and FastAPI backend on Ubuntu with systemd, Redis, Celery, Nginx, and Cloudflare Origin Certificate SSL.

Archive selected BigQuery tables to Cloud Storage as Parquet, then validate that the exports can be downloaded and read back.

Install Google Cloud CLI globally on the host while keeping each client's gcloud config, Python venv, and BigQuery auth isolated per project.

Generate single-voice narration MP3s from SSML using Amazon Polly neural voices, chunked by paragraph and concatenated with ffmpeg.

Upload multi-gigabyte files to S3 with the AWS CLI's parallel multipart upload instead of the browser console, and keep a long transfer alive.

Install Firefox, Chromium, and Google Chrome on Linux, understand when to use each one, and keep a practical set of Firefox shortcuts for keyboard-first usage.

Use LibreOffice on Arch Linux for writing documents, editing office files, opening PDFs visually, and exporting documents to PDF.

Custom uBlock Origin filters that strip the LinkedIn feed down to real posts, removing promoted and suggested cards and the right-side puzzle and add-to-feed modules.

Decide which part of a MAJOR.MINOR.PATCH version to bump on each release based on the kind of change, including the pre-1.0 rules and the one hard rule for publishing.

Use asusctl and asusd for ASUS-specific laptop controls such as keyboard RGB and battery charge limits.

Fix xdg-settings failing with 'qtpaths: command not found' and set Firefox as the system default browser on Arch Linux with KDE Plasma.

Manual brightness and blue light control for an Arch Linux i3 multi-monitor setup.

Configure hibernate on Arch Linux with systemd-boot, UKI, encrypted root, zram, and an ext4 swapfile resume setup.

Install, expose, test, compare, and remove an Arch Linux LTS kernel path with systemd-boot and UKI entries.

Set up a WiFi printer on Arch Linux using CUPS with manual IP configuration and the Epson ESC/P-R driver.

yay is an AUR helper for installing packages not available in the official Arch repositories. Required for packages like Google Chrome.

Pair and reconnect Bluetooth mice, keyboards, and headphones on a minimal Arch/i3 setup with bluez and bluetoothctl, without a GUI like Blueman.

Disable X11 screen blanking and DPMS display sleep to test idle display wake freezes.

Switch i3 from the Super key to the Alt key on Arch by changing the i3 mod setting, fixing the X modifier map, loading Xmodmap from i3, and verifying the setup after reboot.

Configure the core i3 desktop on Arch with Alacritty, Starship, Fastfetch, Picom, image wallpaper, screen layout shortcuts, clean i3status bar, and base shortcuts.

Create a reusable i3 development launcher that starts tmuxp sessions, prepares the screen and power mode, opens the main tmux workspace in Alacritty, and places browser and editor windows on separate workspaces.

Configure systemd-logind lid behavior for laptop, plugged-in, docked, and external-display i3 workflows.

Configure ly as a terminal-style display manager on Arch and make it start the i3 session by default.

Check and fix common PipeWire sound issues in a minimal i3 session on Arch.

Create reusable xrandr screen layout profiles with explicit refresh rates for laptop-only, external-only, and mirror modes in an i3 setup.

Configure a simple selected-region screenshot shortcut in i3 using maim, slop, and xclip.

Configure natural scrolling, tap-to-click, and slower touchpad scrolling on Arch with i3, X11, and libinput.

Manually switch the active keyboard layout in an i3/X11 session with setxkbmap, for example between US English and Turkish Q, with no shortcut or auto-switching.

Define persistent command shortcuts directly in ~/.bashrc and source them into your shell session.

Convert an EPUB ebook to PDF with Calibre's ebook-convert command, including a denser textbook-style layout.

Convert an .m4b file to .mp3 with ffmpeg, keeping metadata and removing the video stream.

Common Bash and readline shortcuts for deleting, undoing, and moving through command-line text.

Why a bare script name fails with "command not found" and how to run a file with an explicit path like ./my-script.sh.

Keyboard driven terminal tool for managing multiple contexts in parallel. Daily routine for sessions, windows, and panes.

Check disk and partition usage, see the disk layout and filesystem types, and find which folders are consuming space with df, lsblk, du, and ncdu.

Resolve 'container name already in use' errors caused by leftover containers when docker compose up fails to recreate services.

GPU utilization, memory, and process monitoring with nvidia-smi for one-shot or refreshed views, and nvtop for an interactive interface.

Operate systemd services, Nginx configs, process IDs, journal logs, Docker logs, and cron jobs on Linux servers and Arch workstations.

Review Linux system freezes and runtime failures, inspect previous boot logs, check driver and package state, and safely update an Arch Linux workstation.

Identify zram-only swap, understand why zram cannot store a hibernation image, and configure a two-layer swap setup with zram for runtime paging and disk-backed swap for hibernate.

Find and kill the process using a port with PIDs.

UEFI based Windows 11 virtual machine on an Arch Linux host using QEMU/KVM, libvirt, and virt-manager.

Create a throwaway Linux Mint XFCE virtual machine on an Arch host with virt-manager and KVM, then move files out of the guest using a writable exFAT USB drive redirected into the VM.

UEFI based Windows 11 virtual machine on an Ubuntu host using QEMU/KVM, libvirt, and virt-manager.

Keep a recoverable off-site copy of important machine state as a tar + zstd + age archive uploaded to S3, and restore it after a reinstall or hardware loss.

Incremental snapshot backups of projects to a local backup drive using restic, with exclude rules for Linux development environments.

Validate a restic backup by restoring onto a clean external drive. Step by step disk preparation, restore execution, file verification, and safe unplug.