A system administrator is teaching a new intern about the Filesystem Hierarchy Standard (FHS) on a Linux server. The intern asks about the purpose of the topmost directory. According to the FHS, what is the primary role of the root (/) directory?
It contains variable data files that change during system operation, such as logs and mail spools.
It contains all system-wide configuration files and host-specific settings.
It contains the majority of multi-user utilities, applications, and their libraries.
It serves as the primary hierarchy and contains all other directories and files.
The correct answer is that the root (/) directory is the primary hierarchy and contains the entire filesystem. According to the Filesystem Hierarchy Standard (FHS), all files and directories appear under the root directory, even if they are on different physical devices. The other options are incorrect as they describe other specific top-level directories:
System-wide configuration files are stored in /etc.
Shareable, read-only user utilities and applications are stored in /usr.
Variable data files, such as logs and spools, are stored in /var.
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