This repository provides a collection of shell scripts to automate the setup and management of an IPsec VPN server on Linux. It supports multiple VPN protocols (IPsec/L2TP, IPsec/XAuth, IKEv2) and a wide range of Linux distributions including Ubuntu, Debian, CentOS, Rocky Linux, AlmaLinux, Oracle Linux, and Alpine Linux. The main entry point is `vpnsetup.sh`, which detects the OS and runs the appropriate installer. The project also includes helper scripts for user management, IKEv2 certificate handling, upgrades, and uninstallation. Additionally, it offers an Azure ARM template for cloud deployment. The code is well-structured with OS-specific installers, common bash utility functions, and extensive documentation in multiple languages. It is a mature, widely-used DevOps tool for system administrators.
This repository provides an initramfs overlay for Alpine Linux that enables headless bootstrapping on systems without keyboard or display. The primary mechanism is a self-contained shell script (`headless_bootstrap`) executed during early boot, which automatically configures networking (Ethernet, WiFi, USB gadget), starts a temporary SSH server with pre-generated keys, and optionally triggers an unattended installation script. It supports USB gadget mode, version checking with auto-update, and a variety of customization via external files. The architecture is a collection of carefully crafted OpenRC service files, shell scripts, and configuration examples, packaged as an `apkovl.tar.gz` overlay. This is not a typical application but a system utility designed to solve a specific provisioning problem: remotely installing Alpine Linux on headless devices.
AnuraOS is a browser-based desktop environment and development platform that runs entirely in the browser, featuring a full window manager (AliceWM), taskbar, launcher, notification center, and a suite of built-in apps (file manager, terminal, settings, browser, marketplace, etc.). It includes a complete x86 emulation subsystem via v86, allowing users to boot a custom Alpine Linux virtual machine with persistent disk storage, PTY multiplexing, and network relay through the Wisp protocol. The system is designed as a Progressive Web App (PWA) with offline support via service workers and uses IndexedDB for filesystem and settings persistence. The architecture is modular: core APIs (filesystem, networking, window management, settings, processes, notifications) are exposed through a global `anura` object. Apps are defined by manifests and can be either iframe-based or manual scripts, with support for versioned libraries imported via `anura.import()`. The filesystem uses an abstract provider pattern (`AFSProvider`) with multiple backends (Filer, LocalFS/OPFS). The x86 subsystem manages a v86 emulator with persistent disk images stored in IndexedDB, and integrates with the host OS through a custom mouse driver and network relay. While the codebase demonstrates strong engineering with clean abstractions (e.g., filesystem providers, window manager, notification service), it also exhibits some technical debt: large monolithic files (v86.tsx, Boot.tsx), use of `eval` in legacy handlers, memory leaks in the x86 disk cache, and race conditions in boot sequencing. The x86 image build process requires Linux, Docker, and specific toolchains, limiting portability. Overall, AnuraOS is a sophisticated and functional webOS with reusable components, but its complexity and some outdated patterns suggest moderate maintenance overhead.