Alhamdulillah! During my journey of mastering Linux System Administration through Al-Nafi’s Diploma in Cloud Cyber Security (DCCS) track, I meticulously documented each lecture to ensure a deep and structured understanding of core Linux concepts.
The curriculum provided a comprehensive and in-depth exploration of Red Hat Linux, covering essential system administration principles. While each lecture was extensive, the depth of knowledge and practical insights gained made the time investment highly rewarding. In addition to the structured coursework, I expanded my learning through self-research, external resources, and practical implementation, enabling a holistic grasp of Linux fundamentals.
These notes serve as an invaluable resource for beginners and intermediate learners who seek to strengthen their understanding of Linux from both theoretical and practical perspectives. To maximize usability and organization, I recommend using Obsidian for reading and structuring the content effectively.
- Comprehensive guide on backup methodologies, including differential, incremental, and full backups
- Data compression & archiving techniques ('Archive & Compression tools')
- Efficient backup management using Rsync (‘A Powerful Backup Tool’)
- Understanding Linux partitions ('Partitions', 'Partition Creation Guide in Linux')
- Detailed exploration of Linux filesystem hierarchy
- Comparison of different Linux file systems and their use cases
- Run-levels and system targets: Understanding Linux startup and shutdown processes
- Comprehensive summary of RHEL fundamentals
- Process management, daemon control, and SWAP space optimization
- User access control: Ownership, permissions, and advanced access mechanisms
- Symbolic and hard links: Differences and practical applications
- Comprehensive breakdown of Linux file systems, mounting procedures, and repair mechanisms
- User account administration: Creation, deletion, and privilege management
- Logical Volume Management (LVM): Dynamic storage allocation and management
- Automated task scheduling using Cron jobs
- Advanced permission handling (setfacl, umask, SUID, GUID, sticky bits, etc.) for enhanced security
- System patching and software management using package managers (‘YUM’, ‘RPM’, ‘Source Code Installation’)
- Kernel management: Configuration, patching, tuning, and performance optimization
- In-depth understanding of networking protocols, OSI model, and common port assignments
- IP configuration, gateway setup, and DNS management best practices
- IP aliasing techniques for network management
- Network monitoring tools and effective troubleshooting techniques
- Essential Linux network configuration and diagnostic commands
- Best practices for managing essential Linux services in enterprise environments
- Configuring and securing file transfer services (FTP, NFS, Samba)
- Implementing and managing Security-Enhanced Linux (SELinux) for access control
- Domain Name System (DNS) configuration, management, and troubleshooting
- Understanding cloud storage types and selecting the appropriate storage solution
- Introduction to AWS cloud infrastructure and services
- EC2 instance families: Choosing the right instance type for various workloads
- Cloud computing fundamentals and AWS service integration
- Application deployment and scalability using AWS cloud architecture
- Apache web server management: Configuration, security hardening, and performance tuning
- Firewall implementation: Understanding kernel-level security mechanisms
- Types of firewalls, TCP Wrappers, and security best practices
- Essential firewall commands for managing Linux security
My interest in Linux was sparked by pure curiosity.
As I progressed, I realized the immense power and flexibility that Linux offers in both enterprise IT environments and cybersecurity domains.
As the saying goes:
"In a world where everything just works, Linux dares you to understand why."
This repository serves as a structured knowledge base, aiming to assist those who are embarking on their Linux System Administration journey. Whether you are a beginner, a cybersecurity enthusiast, or an aspiring system administrator, these notes will provide a solid foundation in Linux concepts, practical skills, and real-world applications.
If you find these notes helpful, feel free to connect with me on LinkedIn or share your feedback. 🚀