Linux Administration
Linux Administration
Linux Administration Field Manual
This section tracks my progress through the core pillars of Linux systems. Each “Day” represents a deep dive into specific subsystems.
The 30-Day Sprint
Week 1: System Fundamentals
- Day 1: Boot Process & Systemd Focus: BIOS/UEFI, GRUB, Kernel Init, and Managing Services.
- Day 2: User Management & Permissions Focus: IAM basics, Sudoers, Sticky Bits, and ACLs.
Quick Reference Tools
| Category | Tools |
|---|---|
| Processes | top, htop, ps, kill |
| Network | ip, ss, nmcli, dig |
| Disk | df, du, lsblk, fdisk |
SRE Note: Always verify configuration changes in a staging environment or container before applying to production.