Jenkins CI/CD: Pipelines, Agents & Deployments

Installation, declarative pipelines, agents, credentials, GitHub/Bitbucket webhooks, deployment stages, and pipeline troubleshooting.

Ansible Automation: Inventory, Playbooks & Roles

Inventory files, playbooks, variables, roles, handlers, Ansible Vault, and real-world playbooks for hardening and deploying servers at scale.

Cron & systemd Timers: Scheduling Jobs in Linux

Crontab syntax, special strings, run-parts directories, and modern systemd timer units — with a direct comparison of when to use each.