# Chapter Basic System Administration #

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[Reviewer](technical_reviewers.html): Yannick Cadin yannick@diablotin.fr FreeBSD/OpenBSD

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An important component of system administration is an awareness of
its subsystems and their interactions, as well as how to monitor the
health of a running system. Demonstrate
experience in interacting with BSD processes, a running kernel, and
the BSD boot process. Demonstrate familiarity
with BSD devices, the disk subsystem and the mail and print daemons.



- [[Determine_which_process_are_consuming_the_most_CPU]]
- [[View_and_send_signals_to_active_processes]]
- [[Use_an_rc__40__8__41___script_to_determine_if_a_service_is_running_and_start__44___restart_or_stop_it_as_required]]
- [[View_and_configure_system_hardware]]
- [[View__44___load__44___or_unload_a_kernel_module]]
- [[Modify_a_kernel_parameter_on_the_fly]]
- [[View_the_status_of_a_software_RAID_mirror_or_stripe]]
- [[Determine_which_MTA_is_being_used_on_the_system]]
- [[Configure_system_logging]]
- [[Review_log_files_to_troubleshoot_and_monitor_system_behavior]]
- [[Understand_basic_printer_troubleshooting]]
- [[Create_or_modify_email_aliases_for_Sendmail_or_Postfix]]
- [[Halt__44___reboot__44___or_bring_the_system_to_single-user_mode]]
- [[Recognize_the_difference_between_hard_and_soft_limits_and_modify_existing_resource_limits]]
- [[Recognize_the_BSD_utilities_that_shape_traffic_or_control_bandwidth]]
- [[Recognize_common__44___possibly_third-party__44___server_configuration_files]]
- [[Configure_a_service_to_start_at_boot_time]]
- [[Configure_the_scripts_that_run_periodically_to_perform_various_system_maintenance_tasks]]
- [[View_the_Sendmail_or_Postfix_mail_queue]]
- [[Determine_the_last_system_boot_time_and_the_workload_on_the_system]]
- [[Monitor_disk_input--output]]
- [[Deal_with_busy_devices]]
- [[Determine_information_regarding_the_operating_system]]
- [[Understand_the_advantages_of_using_a_BSD_license]]
