Debian Full upgrade to the latest OS release automatically

🚀 One-Line Execute:

Replace <URL> with the actual raw script URL:

apt update && apt install -y curl && clear && curl -s https://docs.greenhome.stream/attachments/41 | bash

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✅ What This Script Does

This script checks your system and performs a full upgrade to the latest OS release automatically, including repository updates and cleanup.

🔧 Step-by-Step Breakdown:

1. Check and install required utilities (lsb-release) if missing.
2. Update the system package index (apt update) and report if updates are available.
3. Upgrade current packages using apt upgrade in non-interactive mode.
4. Display current OS information (distro name, version, codename).
5. Check if a newer OS release is available (e.g., Debian 13, Ubuntu 24).

6. If a newer release is available:

   • Check if it's already in /etc/apt/sources.list.
   • If not, update sources to point to the new release.
   • Run apt update again to refresh package index.
   • Perform a full system upgrade (apt full-upgrade) non-interactively.
7. Remove old/unused packages using apt autoremove.
8. Clean cached packages using apt autoclean and apt clean.
9. Display final OS release information after upgrade is complete.

🛡️ The script is fully automated and handles all prompts silently — no user interaction required except for an optional reboot (not forced by the script).