# Chapter Files, Filesystems and Disks #

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

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The usefulness of any computing system is related to the accessibility
of the data stored on it. An admin is expected to thoroughly
understand how to make data available both locally and remotely and
how to use permissions to ensure authorized users can access that
data. Be experienced in backing up data and in
resolving common disk issues.



- [[Mount_or_unmount_local_filesystems]]
- [[Configure_data_to_be_available_through_NFS]]
- [[Determine_which_filesystems_are_currently_mounted_and_which_will_be_mounted_at_system_boot]]
- [[Determine_disk_capacity_and_which_files_are_consuming_the_most_disk_space]]
- [[Create_and_view_symbolic_or_hard_links]]
- [[View_and_modify_ACLs]]
- [[View_file_permissions_and_modify_them_using_either_symbolic_or_octal_mode]]
- [[Modify_a_file__39__s_owner_or_group]]
- [[Backup_and_restore_a_specified_set_of_files_and_directories_to_local_disk_or_tape]]
- [[Backup_and_restore_a_file_system]]
- [[Determine_the_directory_structure_of_a_system]]
- [[Manually_run_the_file_system_checker_and_repair_tool]]
- [[View_and_modify_file_flags]]
- [[Monitor_the_virtual_memory_system]]
