Oracle JRE 8u451 + CardServProxy (CSP) Installer

🔥 Oracle JRE 8u451 + CardServProxy (CSP) Installer 🔥

One-click legacy setup for CSP on Ubuntu servers

Created with ❤️ by Fabiano (@Fabiano) • January 2026

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🌟 What is this?

A powerful, idempotent Bash script that installs Oracle Java Runtime Environment 8 Update 451 (HotSpot VM) and configures CardServProxy (CSP) automatically on Ubuntu servers.

This script uses the official reference repository:
https://github.com/cabralfilho/java-jdk-csp
(for cloning the latest CSP files, configs and csp.tar.gz when available).

✨ Features

• 🛡️ Idempotent installation — safe to run multiple times
• ⚡ Installs Oracle JRE 8u451 from file in /tmp
• 🔧 Configures update-alternatives + permanent JAVA_HOME
• 📦 Clones/updates the reference repo:
  https://github.com/cabralfilho/java-jdk-csp
• 📂 Extracts csp.tar.gz (if present in the repository)
• 🚀 Creates & enables systemd service for CSP
• 🛠️ Built-in guidance for fixing legacy CSP errors

📋 Prerequisites

• Ubuntu 20.04 / 22.04 / 24.04 (64-bit)
• Root/sudo access
• File jre-8u451-linux-x64.tar.gz in /tmp
  → Download from: Oracle Java Archive
  → Look for "Java SE Runtime Environment 8u451 – Linux x64 Compressed Archive"
• Internet connection (for git clone)

🚀 Quick Start

1. Place the JRE file:

   mv ~/Downloads/jre-8u451-linux-x64.tar.gz /tmp/