Linux_fundamentals_Week_3
Linux fundamentals WEEK 3

Linux fundamentals WEEK 3

Parthasarathy Gunasekaran's photo
Parthasarathy Gunasekaran
·

3 min read

Table of contents

Linux Fundamentals

1. Advanced File Permissions and Ownership

  • Changing Ownership:

    • Use the chown command to change ownership of files and directories.

    • Manage user and group ownership effectively.

  • File Permissions Management:

    • Explore symbolic and numeric modes for chmod.

    • Apply recursive permission changes with ease.

2. Disk and Storage Management

  • Commands for Disk Management:

    • Analyze disk space usage with df.

    • Summarize directory sizes using du.

    • Inspect block device information with lsblk.

  • Mounting and Unmounting Drives:

    • Master mount and umount commands.

    • Automate drive mounts through /etc/fstab.

3. System Monitoring and Performance

  • Monitoring Tools:

    • Use htop or top for real-time process monitoring.

    • Monitor disk I/O with iotop.

  • Log Analysis:

    • Navigate systemd logs using journalctl.

    • Monitor real-time logs with tail -f.

4. Shell Scripting Basics

  • Automation with Shell Scripts:

    • Create scripts to automate everyday tasks.

    • Utilize variables, loops, and conditionals.

  • Best Practices:

    • Enhance readability with comments.

    • Handle errors gracefully in your scripts.

5. Networking in Linux

  • Network Configuration:

    • Configure network interfaces using ifconfig or ip commands.

  • Network Monitoring Tools:

    • Explore active connections with netstat or ss.

    • Diagnose issues using ping, traceroute, and tcpdump.

Networking Topics

1. Proxy, VPN, Firewall, and DMZ Concepts

  • Firewall Configuration:

    • Set up rules using iptables or ufw.

  • VPN Basics:

    • Understand VPN protocols and configurations.

  • DMZ Concepts:

    • Learn the role of DMZ in network security.

2. Advanced IP Addressing

  • CIDR Notations:

    • Calculate subnets and subnet masks.

  • Static and Dynamic IPs:

    • Configure static IP addresses.

    • Understand DHCP for dynamic IP assignment.

3. Ports and Protocols

  • Common Ports and Protocols:

    • Dive into HTTP, HTTPS, FTP, SMTP, and more.

  • SSL/TLS Encryption:

    • Grasp the basics of secure communication protocols.

Git and GitHub

1. Git Collaboration

  • Remote Repository Management:

    • Add and manage remote repositories.

    • Fetch and pull updates seamlessly.

  • Pull Requests and Merge Conflicts:

    • Create and review pull requests.

    • Master strategies for resolving conflicts.

2. Git Tags and Releases

  • Tagging:

    • Create lightweight and annotated tags.

  • Versioning:

    • Use tags for effective software release management.

3. Git Hooks

  • Automating Tasks:

    • Set up client-side and server-side hooks.

    • Implement pre-commit and post-commit hooks for efficiency.

Additional Tools and Concepts

1. Virtualization vs. Containers

  • Virtualization:

    • Get hands-on with VirtualBox or VMware.

  • Containers:

    • Explore Docker basics.

    • Understand Kubernetes fundamentals.

2. Troubleshooting and Debugging

  • Network and System Issues:

    • Apply common troubleshooting techniques.

    • Use diagnostic commands effectively.

  • Script Debugging:

    • Identify and fix errors in shell scripts.

I am proud to share that I have successfully completed this learning plan. Each concept learned has enriched my understanding and skills. I look forward to applying this knowledge in real-world scenarios and continuing my learning journey.

Happy learning!

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