Tech Notes

Summary

A flat directory of my notes and knowledge on technical topics, in the same vein as the concept of TIL (Today I Learned) notes.

Categories ⁶²

• airflow
• android
• ansible
• api
• authelia
• aws
• azure
• bash
• blink
• borg
• caddy
• cli
• css
• docker
• fedora
• firefox
• git
• github
• gnome
• hardware
• hledger
• java
• javascript
• jira
• jq
• kubernetes
• libvirt
• linux
• macos
• miscellaneous
• mosquitto
• netlify
• network
• obsidian
• openssl
• openvpn
• packer
• pandoc
• pihole
• postgresql
• powershell
• putty
• python
• raspberry-pi
• samba
• samsung
• sass
• sed
• self-hosted
• selinux
• smart-home
• sqlite
• ssh
• systemd
• telegram
• tmux
• tomcat
• typesense
• video
• vim
• vscode
• windows

Notes ²²³

airflow ¹

• 2020-10-22 - Start Airflow

android ⁸

• 2020-03-25 - Extract/Pull Android App Package from Phone
• 2020-03-29 - List Apps with ADB
• 2020-09-06 - Access Android Phone Directories On CLI
• 2021-11-15 - Root Samsung Galaxy S20
• 2022-12-19 - Install Heimdall on Fedora
• 2022-12-19 - Flash Samsung Stock Firmware with Odin
• 2022-12-19 - How to fix Access denied screen randomly appearing on rooted devices
• 2024-06-24 - Update hosts File on Rooted Android

ansible ³

• 2021-01-13 - Version Locking Ansible Roles in a Playbook
• 2021-01-16 - Ansible Cheatsheet
• 2021-02-05 - Generate Crypted Passwords for the Ansible User Module

api ¹

• 2024-06-22 - Miniflux API

authelia ¹

• 2023-01-11 - Authelia & Caddy Integration

aws ¹²

• 2019-07-17 - List Red Hat AMIs using AWS CLI
• 2019-08-20 - Resize an EC2 Linux File System on AWS
• 2019-09-11 - AWS CLI query flag uses JMESPath
• 2019-10-10 - Find The Most Recent AWS AMI
• 2019-10-22 - List AWS Backup Recovery Points Using AWS CLI
• 2019-12-24 - List Volume Device ID for an EC2 Instance
• 2020-03-02 - Connect to an AWS S3 Bucket with WinSCP
• 2020-08-26 - Manage EC2 KeyPairs with the AWS CLI
• 2020-10-13 - RDS Storage Increases Might Take a While
• 2020-12-22 - Get IP Addresses Used by Amazon Route 53 Health Checks
• 2021-01-11 - Install AWS CloudWatch Agent on Linux
• 2021-03-02 - AWS CloudWatch Insights Average

azure ³

• 2020-12-09 - Connect to Azure AD in PowerShell
• 2022-07-27 - Azure CLI Cheatsheet
• 2022-10-19 - Kusto Tips & Snippets

bash ⁵

• 2019-11-22 - View and Log Detailed Bash Script Output
• 2020-03-09 - Loop Through Files and Search and Replace
• 2020-06-23 - Generate Sequences in Bash
• 2020-11-24 - Multiple Subdirectory sed Operation
• 2022-12-27 - Set -x and Bash

blink ¹

• 2022-02-04 - blink(1) USB Notification Light

borg ³

• 2021-07-19 - Borg Cheatsheet
• 2022-10-26 - Borg Backup Item Flags
• 2023-07-10 - Borg Backup Exclusion List

caddy ²

• 2022-12-31 - Caddy Server Basic Authentication
• 2023-12-25 - Quick Caddy Reload

cli ³²

• 2019-01-28 - Delete files matching a pattern using find
• 2019-01-28 - Sort files and directories by disk size
• 2019-03-05 - Retrieve Nameservers for Hostname
• 2019-03-08 - Get the disk size of a file or directory
• 2020-03-27 - Bulk Rename Regex Pattern
• 2020-04-19 - fzf Fuzzy Completion
• 2020-05-30 - Use Dig to Get Public IP
• 2020-06-20 - rsync Cheatsheet
• 2020-07-01 - fzf Search on My Notes
• 2020-07-01 - Keep SSH Connection Alive
• 2020-07-05 - Install Node Version Manager
• 2020-07-05 - File Space Usage with du
• 2020-10-13 - Linux Date Command
• 2020-11-14 - Mouse Scroll Escape Codes in Terminal
• 2020-12-25 - Web Server One Liners
• 2021-07-03 - Restart KDE Plasma
• 2021-07-26 - Recursively Change Directory and File Permissions
• 2021-08-12 - RSA Token to QR Code
• 2021-09-02 - Create a QR Code
• 2021-12-29 - Exif Tool Cheatsheat
• 2022-02-04 - Send Output to Clipboard using xclip
• 2022-07-05 - Read QR Code from Image
• 2022-08-09 - journald Cheatsheet
• 2022-10-02 - InvokeAI Stable Diffusion Fork Cheatsheet
• 2022-10-14 - Restart Display Manager
• 2022-10-25 - Wrap systemctl output
• 2022-10-27 - Comment the Current Command in the Terminal
• 2022-11-06 - Remove all Temporary Unison Files
• 2023-01-11 - Hash a Password using bcrypt
• 2024-06-04 - Convert Black Ink PDF to Blue Ink
• 2024-07-06 - exiftool Cheatsheet
• 2024-09-03 - OCR with Tesseract

css ²

• 2024-02-25 - Make Table Headings Sticky
• 2024-06-05 - Override Disabled Scrolling on Cookie Pop-up Boxes

docker ⁵

• 2021-04-03 - Docker Cheatsheet
• 2021-12-10 - Docker cannot start service app
• 2022-06-01 - Regular File Not Found Error PHP Container
• 2023-12-06 - It's compose.yaml
• 2024-01-05 - Stop & Start Docker Compose if You've Edited Your Compose File

fedora ⁵

• 2020-03-26 - Ctrl-A and DuckDuckGo Fedora Bug
• 2020-09-08 - Connect to Fedora from Windows with xRDP
• 2022-05-15 - Install HP Printer on Fedora
• 2023-03-31 - Cache Only DNF
• 2024-01-01 - Install GNOME and VNC Server on Fedora

firefox ⁶

• 2020-09-25 - Disable Cross-Origin Request Blocking on Firefox
• 2022-12-27 - Stuck Tooltips on Firefox Linux
• 2023-06-16 - Sort Firefox Extensions List
• 2023-08-11 - Tabler Icon Fonts are not OpenType spec compliant
• 2024-04-20 - YouTube Desktop Shortcuts
• 2024-06-25 - Block Javascript on Website Using uBlock Origin

git ⁵

• 2020-05-16 - Git Cheatsheet
• 2023-02-02 - A Good Explanation of git rebase
• 2023-07-04 - Conventional Commits Types
• 2023-11-10 - Squash Commits in Git
• 2023-11-23 - Fix no newline at end of file in Git diff

github ⁴

• 2022-08-01 - GitHub CLI Cheatsheet
• 2022-08-08 - act Cheatsheet
• 2022-08-09 - GitHub Actions Cheatsheet
• 2022-09-09 - Clone GitHub Repository with Personal Access Token

gnome ²

• 2022-01-15 - Installed Gnome Extensions
• 2022-02-19 - View All Gnome Shortcuts

hardware ⁵

• 2022-01-29 - Switch Shortcut Modes on Logitech MX Keys
• 2023-06-07 - Reset Logitech MX Keys Keyboard
• 2023-08-29 - Update or Change Connected Wi-Fi on HP DeskJet 2722
• 2023-09-01 - Anker Soundcore Mini 2 Bluetooth Volume Control on Windows 10
• 2024-01-23 - Only Remove the Key-Cap not The Hinge on an EliteBook 840 G8 Laptop Keyboard

hledger ¹

• 2021-08-14 - hledger Cheatsheet

java ¹

• 2020-07-16 - Take a heap-dump using jcmd

javascript ¹

• 2023-05-10 - Privacy Redirect Bookmarklet

jira ¹

• 2023-06-21 - Jira JQL Statements

jq ²

• 2020-05-08 - jq Cheatsheet
• 2020-10-05 - jq Filters

kubernetes ¹

• 2021-12-07 - Kubernetes Cheatsheat

libvirt ²

• 2022-01-09 - KVM/QEMU Notes
• 2022-02-21 - Increase Memory & Virtual CPU on Virtual Machine

linux ¹¹

• 2019-01-13 - man Page Sections
• 2019-01-13 - chmod Reference Table
• 2019-06-21 - Update Boot Manager Options
• 2020-03-02 - Bulk change file endings in a directory
• 2020-07-14 - Linux Shell
• 2020-12-11 - Prepare a New Hard Drive in Linux
• 2021-01-01 - Install Fonts on Linux and Update Font Cache
• 2022-01-19 - Find out Laptop Screen Panel Model
• 2022-02-08 - Resize Logical Volume Partition
• 2022-09-30 - Extending the Size of a Logical Volume Group
• 2023-01-07 - Add Linux User without Prompt

macos ⁴

• 2022-01-09 - Fix "... Damaged Can't be Opened" on MacOS
• 2022-11-18 - macOS cron Permission Issues
• 2022-11-28 - Set macOS Theme for Specific Apps
• 2023-06-06 - Use MacOS Privileges App from the Command Line

miscellaneous ⁵

• 2020-08-25 - Box-drawing characters
• 2020-08-28 - Script Comment Hierarchy
• 2021-09-06 - URI Handler
• 2022-09-12 - Install InvokeAI Stable Diffusion Fork
• 2024-02-04 - Merge Multiple PDF's into One PDF

mosquitto ¹

• 2023-08-15 - Mosquitto/MQTT Testing Cheatsheet

netlify ¹

• 2021-04-23 - Netlify Domain Redirects

network ¹⁹

• 2019-01-31 - Start and Stop a Network Interface
• 2020-06-28 - Set Static IP on Ubuntu 20.04
• 2020-07-02 - IP Address Classes
• 2020-08-31 - Change DNS on Fedora
• 2020-12-10 - Set Static IP Address on Debian
• 2021-11-19 - Creating a Bridge with NetworkManager
• 2022-07-18 - Sky Fibre Setup with Netgear R7800 Router
• 2022-08-09 - Tailscale Setup & Split DNS
• 2022-12-30 - RJ-45 Ethernet Crimping
• 2023-01-08 - Setup WireGuard on Debian
• 2023-01-09 - WireGuard Commands
• 2023-01-09 - WireGuard Troubleshooting
• 2023-01-23 - Fix for Docker Breaking KVM Networking
• 2023-11-03 - OpenWRT Cheatsheet
• 2023-11-03 - Specify DNS Resolver for dig Query
• 2023-11-03 - Verify if Unbound is Resolving DNS Queries Locally
• 2023-11-18 - OpenWRT Firewall Zones
• 2024-07-11 - Enable Wake-on-LAN using NMCLI
• 2024-08-13 - tcpdump Cheatsheet

obsidian ²

• 2024-02-16 - Obsidian Search Cheatsheet
• 2024-04-11 - Obsidian Custom Checkboxes

openssl ⁴

• 2020-08-26 - OpenSSL RSA Encryption
• 2021-01-09 - Wildcard OpenSSL Certificate Authority
• 2021-08-13 - OpenSSL on MacOS
• 2021-08-13 - Local LAN Certificate

openvpn ¹

• 2019-09-14 - Connect to an OpenVPN Tunnel Using the CLI

packer ¹

• 2021-02-28 - Why Packer?

pandoc ²

• 2019-12-29 - Convert Markdown to HTML
• 2020-05-16 - Pandoc Cheatsheet

pihole ¹

• 2020-01-04 - Allow Specific Devices to Bypass Pi-hole or dnsmasq

postgresql ²

• 2020-08-04 - PostgreSQL Commands
• 2020-09-22 - Check Size of a Table in PostgreSQL

powershell ⁴

• 2020-03-18 - Powershell Date Command
• 2020-06-19 - Create a PowerShell Profile
• 2020-08-14 - Speed Up PowerShell Invoke-WebRequest
• 2020-11-25 - Exchange Online PowerShell

putty ¹

• 2019-06-26 - Convert Putty Keys

python ⁵

• 2020-01-04 - Convert Python Dictionary to JSON
• 2020-07-05 - Convert JSON to Minified JSON with Python
• 2020-08-23 - Requests Python Library
• 2020-12-24 - List Functions in a Python Module
• 2022-01-29 - Automatically create a Pip requirements.txt

raspberry-pi ³

• 2023-07-11 - Enable Hardware Accelerated Video Decoding In Chromium On Raspberry Pi OS
• 2023-11-30 - Install Fedora on Raspberry Pi
• 2024-09-11 - Install blink1-tool on Raspberry Pi

samba ²

• 2020-11-24 - Setup a Samba Fileshare on Debian
• 2020-12-23 - Automatically Mount Samba Share

samsung ¹

• 2023-12-07 - Install Jellyfin App on Samsung Smart TV running Tizen

sass ¹

• 2020-07-05 - Watch a Sass File

sed ²

• 2020-06-01 - sed Cheatsheet
• 2020-10-06 - Sed Backreferences and RegEx Capturing Groups

self-hosted ²

• 2020-11-24 - Create an SFTP Server
• 2022-02-08 - Code Server Port Bind Issue

selinux ¹

• 2020-10-29 - SELinux Cheatsheet

smart-home ⁵

• 2022-05-31 - Home Assistant OS Configuration
• 2022-06-01 - Home Assistant OS CLI Cheatsheet
• 2022-10-07 - Reconnection Issue with Sonoff SNZB-02 in Zigbee2MQTT
• 2023-11-22 - Mosquitto SSL with Custom Certificate Authority
• 2024-02-20 - Fixing a Tapo Plug

sqlite ¹

• 2021-02-09 - SQLite3 Cheat Sheet

ssh ²

• 2019-03-09 - Recreate Public Key from Private Key
• 2020-07-05 - Copy an SSH Key to Another User with Rsync

systemd ³

• 2022-01-16 - Speed-up Fedora Boot Time
• 2022-02-12 - Laptop Lid Closure Settings on Linux
• 2022-10-07 - Reboot to BIOS/UEFI with systemd

telegram ¹

• 2022-08-11 - Get Telegram Bot Chat ID

tmux ²

• 2020-07-04 - tmux Split Window Shell Alias
• 2021-02-28 - Tmux Cheatsheet

tomcat ¹

• 2020-10-10 - Hide Tomcat Version Details on 404 Page

typesense ¹

• 2021-08-03 - Typesense Cheatsheet

video ¹

• 2024-05-17 - Create Full Colour GIF from Video

vim ⁸

• 2020-06-03 - Save a Vim Session
• 2020-06-18 - Visual Line Wrap in Vim
• 2020-06-19 - Edit over SSH with Vim
• 2020-09-08 - Enable Vim +clipboard Support On Fedora
• 2020-10-13 - Vim Cheatsheet
• 2022-10-21 - Hard Wrap Selection in Vim
• 2022-11-16 - Open a File at Specified Line Number with Vim
• 2022-11-16 - Open Files Side-By-Side with Vim

vscode ³

• 2020-03-15 - Linux and Visual Studio Code Colour Block Bug
• 2020-07-05 - Enable Scope Inspector in VS Code
• 2020-10-21 - Download the VSIX for Any VS Code Extension

windows ⁴

• 2020-04-08 - WSL Network Share
• 2020-08-01 - Inconsolata on wsltty on Windows 10
• 2020-10-23 - Disable Windows 10 Automatic Restarts after Updates
• 2021-07-21 - Mount Windows Drive in WSL