Major Distributions Compared
| Distro | Package Mgr | LTS Support | Key Traits |
|---|---|---|---|
| Ubuntu | apt (deb) | 5 years (LTS) | Largest community, most tutorials, richest repos |
| Debian | apt (deb) | ~5 years | Extremely stable, lightweight, Ubuntu's upstream base |
| AlmaLinux | dnf (rpm) | 10 years | CentOS successor, 1:1 RHEL compatible |
| Rocky Linux | dnf (rpm) | 10 years | Founded by CentOS creator, community-driven |
| CentOS Stream | dnf (rpm) | Rolling | RHEL upstream preview — no longer recommended for production |
⚠️ Note: CentOS 7 reached EOL on June 30, 2024. CentOS 8 ended even earlier in late 2021. If you're still using CentOS, migrate to AlmaLinux or Rocky Linux.
Ubuntu vs Debian: How to Decide
Both use the apt package manager and .deb packages. The key differences:
- Ubuntu: Newer software versions, more out-of-the-box tools (e.g., snap), vast tutorial ecosystem. Best for beginners and when you need the latest software.
- Debian: Lighter default install (lower memory usage), conservative but rock-solid packages. Best for production servers that prioritize stability above all.
💡 Beginner pick: Go with Ubuntu 22.04 LTS or 24.04 LTS. When you run into issues, there's almost always an Ubuntu-specific solution online.
Package Manager Quick Reference
apt (Ubuntu / Debian)
apt update # Update package index
apt upgrade # Upgrade all installed packages
apt install nginx # Install Nginx
apt remove nginx # Remove Nginx
apt search keyword # Search for packagesdnf (AlmaLinux / Rocky Linux)
dnf check-update # Check for available updates
dnf upgrade # Upgrade all installed packages
dnf install nginx # Install Nginx
dnf remove nginx # Remove Nginx
dnf search keyword # Search for packagesRecommendation Summary
| Use Case | Recommended | Why |
|---|---|---|
| Beginners learning Linux | Ubuntu 22.04/24.04 LTS | Most resources, fastest to get started |
| Lightweight stable web server | Debian 12 | Lowest resource usage, rock-solid |
| Enterprise / compliance | AlmaLinux 9 | RHEL compatible, 10-year support |
| Docker / container host | Ubuntu or Debian | Best official Docker support |