Checkin_base_OS

Here’s a clean and well-structured README in Markdown for your Lua distro base detection script:

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# 🖥️ Linux Distribution Base Detector (Lua)

A lightweight Lua function to detect the **base family** of your Linux distribution.  
Supports **Arch**, **Debian**, **Red Hat**, **Alpine**, **Gentoo**, and **Solus** based systems,  
and falls back to package manager detection if standard files are missing.

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## 📋 Supported Bases

| Code | Base Name  | Examples                                                                 |
|------|------------|---------------------------------------------------------------------------|
| -1   | Unknown    | Any system that does not match known signatures                          |
| 0    | Arch       | Arch Linux, Manjaro, EndeavourOS, Garuda                                 |
| 1    | Debian     | Debian, Ubuntu, Linux Mint, Pop!\_OS, Elementary OS                      |
| 2    | Red Hat    | Red Hat Enterprise Linux (RHEL), Fedora, CentOS, Rocky Linux, AlmaLinux  |
| 3    | Alpine     | Alpine Linux, PostmarketOS                                               |
| 4    | Gentoo     | Gentoo Linux, Funtoo                                                      |
| 5    | Solus      | Solus OS                                                                 |

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## 📦 Features
- **Fast**: Single function call to detect the base.
- **Reliable**: Checks `/etc/os-release`, distro-specific release files, and package managers.
- **Portable**: Works on most Unix-like environments where Lua is available.
- **Extensible**: Easy to add more bases or custom checks.

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## 🚀 Usage

```lua
-- Paste the detect_base() function here or require it from another file.

local base = detect_base()

if base == 0 then
    print("Arch-based system detected!")
elseif base == 1 then
    print("Debian-based system detected!")
elseif base == 2 then
    print("Red Hat-based system detected!")
elseif base == 3 then
    print("Alpine-based system detected!")
elseif base == 4 then
    print("Gentoo-based system detected!")
elseif base == 5 then
    print("Solus-based system detected!")
else
    print("Unknown base")
end

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🔍 How It Works

1. Primary Check Reads /etc/os-release and matches ID_LIKE or ID values.

2. Fallback #1 Looks for distribution-specific release files:

   • /etc/arch-release
   • /etc/debian_version
   • /etc/redhat-release
   • /etc/alpine-release
   • /etc/gentoo-release
   • /etc/solus-release

3. Fallback #3 If none match, returns -1 (Unknown).

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🛠 Extending the Script

To add a new base:

1. Add ID_LIKE / ID matching in the /etc/os-release check.
2. Add a release file check in the fallback section.
3. Add the package manager command check as a last resort.