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Rasbian/install_fpm_debian.sh

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+#!/usr/bin/env bash
+# install_fpm_debian.sh
+# Simple installer script for FPM on Debian-based systems.
+
+set -e
+
+if [ "$EUID" -ne 0 ]; then
+  echo "Please run this script as root (e.g. with: sudo ./install_fpm_debian.sh)"
+  exit 1
+fi
+
+echo "Updating package lists..."
+apt update
+
+echo "Installing Ruby and build tools..."
+apt install -y ruby ruby-dev build-essential
+
+echo "Installing FPM via RubyGems..."
+gem install --no-document fpm
+
+echo
+echo "Done. FPM version installed:"
+fpm --version || echo "FPM installed, but not found in PATH. Try opening a new terminal session."