Linux Fundamentals

Linux

Shell basics, filesystem hierarchy, processes and services.

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Permissions & Ownership

chmod, chown, umask, SUID/SGID, sticky bit, ACLs.

Bash Scripting

Loops, conditionals, functions and automation patterns.

System Hardening

SSH hardening, auditd, firewalls, service minimisation.

Log Analysis

journalctl, auth logs, grep/awk triage workflows.

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