System Administration

overview

Summary

System administration manages computers and servers. Remember the core areas: user_management, file_permissions, process_management, and service_management. Handle package_management, network_configuration, and disk_storage. Keep system_security, backups, and system_monitoring in place. Use the command_line, shell scripting, SSH, cron, and logs. Know common config file locations and package tools. Apply updates and patches regularly. Understand virtualization and containers for isolation. The goal is stable, secure, and predictable systems that recover quickly.