Potato Energy Tech Blog

Docker Volumes store data independently from containers but require separate approach for backup. This guide describes universal methods for working with volumes using popular services as examples. 💡 Replace volume names with your own. Methods work with any containers. 📦 Backup volumes Via docker-volume-backup (recommended) docker run --rm \ -v portainer_data:/backup/portainer_data \ -v postgres_data:/backup/postgres_data \ -v redis_data:/backup/redis_data \ -v /opt/docker/backup:/archive \ --entrypoint backup \ offen/docker-volume-backup:v2 Parameters: Parameter Description -v <volume>:/backup/<name> Map volume to backup directory -v /opt/docker/backup:/archive Where to save archive on host --entrypoint backup Run backup mode --rm Remove container after completion Why this method: ...

A submodule is a reference to another Git repository inside your project. Useful when you need to include an external library or shared code, but keep it in a separate repo. 💡 A submodule stores not the code, but a reference to a specific commit of the external repo. Add a submodule # Add a repo as a submodule to a specific path git submodule add <URL> <path/to/place> # Example git submodule add https://github.com/luizdepra/hugo-coder.git themes/hugo-coder # Commit changes git commit -m "Add submodule: themes/hugo-coder" git push After this, your project will have: ...

Git is a version control system. It tracks code changes, enables team collaboration, and lets you undo mistakes. 💡 Install once, use for years. Installation Windows Option 1: Official installer (recommended) Download from git-scm.com Run installer, keep defaults Important: On “Adjusting your PATH” step, select Git from the command line and also from 3rd-party software Option 2: Via Winget (PowerShell) winget install Git.Git Option 3: Via Chocolatey choco install git -y Linux Ubuntu / Debian sudo apt update sudo apt install git -y Fedora / RHEL ...

GPT4Free (g4f) is a free tool that gives you access to powerful AI models: GPT-4/5, Claude, Gemini, DeepSeek. It works by reverse-engineering public APIs. ⚠️ Note: For educational and testing purposes only. May violate some services’ ToS. Install in 2 minutes Requirements Any computer with internet Python 3.10+ (check “Add to PATH” during install) One command pip install -U g4f[all] Done. Library is ready. Run it Option 1: Web UI (chat in your browser) python -m g4f.cli gui --port 8080 Open in browser: http://localhost:8080/chat/ ...

OpenSSH is a tool for secure remote access via the SSH protocol. It encrypts all traffic, supports key-based authentication, and works on Windows, Linux, and macOS. 💡 After setup, you can connect to your Windows PC like a Linux server: ssh user@192.168.1.100 Requirements OS: Windows 10 (1809+), Windows 11, Windows Server 2019/2022 Privileges: Administrator Network: Access to port 22 (local or remote) Installation (3 ways) Option 1: PowerShell (recommended) # Run as Administrator # Install OpenSSH server Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0 # Verify installation Get-WindowsCapability -Online | Where-Object Name -like 'OpenSSH*' Option 2: DISM (alternative) dism /Online /Add-Capability /CapabilityName:OpenSSH.Server~~~~0.0.1.0 Option 3: Via Settings (GUI) Settings → Apps → Optional features “Add a feature” → find “OpenSSH Server” → Install Configure the service # Run as Administrator # Enable auto-start for sshd Set-Service -Name sshd -StartupType Automatic # Start the service Start-Service sshd # Check status Get-Service sshd # Verify port 22 is listening netstat -ano | findstr :22 Firewall # Check for OpenSSH rule Get-NetFirewallRule -Name *OpenSSH-Server* | Select Name, Enabled # If missing, create it New-NetFirewallRule -Name sshd ` -DisplayName 'OpenSSH Server' ` -Enabled True ` -Direction Inbound ` -Protocol TCP ` -LocalPort 22 ` -Action Allow ` -Profile Any Test connection # From the same PC ssh localhost # From another device on the network ssh <your_username>@<Windows_IP> # Example: ssh kirill@192.168.1.100 💡 First connection will ask to confirm the host key fingerprint - type yes. ...

This guide covers advanced OpenWRT configuration for power users. We’ll set up DNS-level traffic filtering, secure remote access via WireGuard, metrics monitoring, and automated notifications. 💡 All sensitive values are replaced with <...>. Substitute your own. 📦 Package installation opkg update # Monitoring: prometheus exporter + modules opkg install \ prometheus-node-exporter-lua \ prometheus-node-exporter-lua-nat_traffic \ prometheus-node-exporter-lua-netstat \ prometheus-node-exporter-lua-openwrt \ prometheus-node-exporter-lua-wifi \ prometheus-node-exporter-lua-wifi_stations # WireGuard: kernel module + tools + LuCI opkg install \ kmod-wireguard \ wireguard-tools \ luci-proto-wireguard # DNS over HTTPS opkg install https-dns-proxy # Debug utilities opkg install curl jq tmux htop Why these packages: ...

OrangePI and other ARM single-board computers often use eMMC or SD cards with limited write endurance. Over time, storage fills up, degrades, or fails. This guide describes a method for data recovery and migration to external storage (USB SSD/HDD) via a chroot environment. 💡 Method is universal: works for OrangePI, Raspberry Pi, NanoPi, and other ARM systems. 📦 Preparation Requirements Component Requirements USB drive SSD/HDD, capacity ≥ eMMC data Live image Any Linux with ARM support (optional) Access root or sudo, physical access to board Network Ethernet or WiFi (for remote access) Check connected storage # Show all MMC devices (eMMC, SD card) ls /dev/mmc* # Show all block devices lsblk # Show partitions and mount points df -h Expected output: ...