System Administration

Master Linux cron jobs for scheduling. Crontab syntax, common patterns, error handling, output logging, and systemd timer alternatives.

Linux networking for DevOps. IP configuration, DNS, firewall rules, routing tables, packet capture with tcpdump, and troubleshooting.

Manage Linux processes. ps, top, kill signals, background jobs, nice priorities, systemd services, and zombie process cleanup.

Master Linux file permissions. chmod, chown, umask, SUID, SGID, sticky bit, and ACLs with practical examples for system security.

Manage Linux disks with LVM. Physical volumes, volume groups, logical volumes, online resizing, snapshots, and migration strategies.