This is a comprehensive V2Ray installation and management script written in Bash. It provides a one-click installer (install.sh) and a management CLI (v2ray.sh) for deploying and operating V2Ray proxy servers on Linux (Ubuntu/Debian/CentOS). The script automates V2Ray core installation, configuration generation for multiple protocols (VMess, VLESS, Trojan, Shadowsocks, Socks, Dokodemo-Door), TLS certificate management via Caddy, dynamic port allocation, BBR enablement, and DNS configuration. It uses a modular architecture with separate source files for each functional area (core.sh for protocol logic, caddy.sh for TLS, dns.sh, bbr.sh, systemd.sh for service management, download.sh for fetching binaries, log.sh, old.sh for migration). The script manages multiple simultaneous configurations via JSON files in /etc/v2ray/conf/ and uses V2Ray's API for hot-reloading. It supports both interactive menu-driven operation and direct command-line arguments for automation.