servers

Linux system administration is fundamental to DevOps. Process management with ps, top, htop monitors system activity. systemctl manages systemd services—start, stop, enable, disable. Disk management with df, du, lsblk, mount handles storage. journalct

Ansible automates server configuration and application deployment without agents. Playbooks are YAML files describing desired system state. hosts targets machines from the inventory. tasks execute modules like apt, copy, template, service, and user. h