Infrastructure Core

Linux System Administration & Shell

Linux is the operating system powering over 90% of the world’s servers and cloud infrastructure. Learn file permissions, process management, cron automations, and security hardening.

Curated 2026 Curriculum GuideProject-Based Track

RHEL / UbuntuBashsystemdSSHiptablesCron

🇮🇳 Indian Market Benchmark

Expected CTC Range₹4.5L – ₹12.0L LPA

Estimated Timeline8 – 10 Weeks

Demand Scope14,000+ Openings

Experience LevelFresher Friendly

Top Hubs:Bengaluru, Pune, Hyderabad, Chennai

Explore Career Compass Match

Core Track Highlights

Essential foundation for all Cloud, DevOps, and Cybersecurity careers

High hiring volume in data centers and managed IT services

Prerequisite for RHCSA certification

Structured Phase-by-Phase Syllabus

Focus on build-by-doing milestones rather than passive video consumption.

Weeks 1-3

Phase 1: Shell & File System Hierarchy

File navigation, permissions (chmod/chown), vim editor
grep, awk, sed stream text processing
Managing systemd services and process kill signals

🎯 Milestone Proof Project: Log Rotation & Automatic Disk Usage Cleanup Script.

Weeks 4-6

Phase 2: User Admin & Networking

User groups, sudoers privileges, SSH key authentication
IP routing, DNS resolution, netstat, and firewall rules
NFS and Samba file sharing

🎯 Milestone Proof Project: Multi-User Secure Linux Bastion Server Setup.

Weeks 7-10

Phase 3: Automation & Server Hardening

Writing robust Bash scripts with error trapping
SELinux security policies and PAM modules
RHCSA exam practice scenarios

🎯 Milestone Proof Project: Automated Disaster Backup Script with offsite rsync synchronization.

Technical Interview Questions & Answers

Q1: What is the difference between a Hard Link and a Soft (Symbolic) Link in Linux?

A Hard Link points directly to the file inode (and remains valid if the original file name is deleted). A Soft Link points to the file pathname (and becomes broken if the target file is moved or deleted).

Frequently Asked Questions

Do I need certification to get a Linux admin job?

RHCSA (Red Hat Certified System Administrator) provides immediate recognition, but hands-on Bash and server management skills are tested in technical rounds.