rajaram0203.hashnode.dev🔐 Linux Security & File Permissions for Beginners(Users, Groups, Sudo, SSH, IPTables & More) If you're learning Linux, DevOps, or Cloud, understanding security and permissions is mandatory. Because in Linux: Everything is a file — and every file ha4d ago·4 min read
rajaram0203.hashnode.dev🌐 Networking for Beginners: DevOpsIn this blog, we’ll understand: Hub Switch Router Gateway & Default Gateway Modem & FTTH (ONU device) Broadband & WiFi Network Interface Card (NIC) Firewall VPN VPC DHCP DNS 🧠 First: WhFeb 22·7 min read
rajaram0203.hashnode.dev🌍 DNS for Beginners: How the Internet Finds ServersIf you are learning Linux, DevOps, Cloud, or Networking, understanding DNS is mandatory. Because every time you open: google.com DNS is working silently in the background. In this blog, we’ll understand: What is DNS? How DNS works What happens wh...Feb 15·4 min read
rajaram0203.hashnode.dev🐧 Linux for Beginners: Compression, Searching, Redirection, Pipes & VI EditorIn this blog, you’ll learn: File compression and archiving Searching and extracting data from files Common compression & extraction commands I/O redirection and pipes Linux text editors (Nano & VI with advanced commands) All examples are real-...Feb 6·4 min read
rajaram0203.hashnode.dev🐧 Linux for Beginners: How Linux Works with Hardware, Boot Process, and File SystemsIf you are new to Linux, DevOps, or Cloud, understanding how Linux works internally will give you a strong foundation. In this beginner-friendly blog, we’ll learn: How Linux interacts with hardware The Linux boot sequence (step by step) Linux file...Feb 1·4 min read