File Systems

4.

Directory Systems and Naming

4.1.

Directory Abstraction

4.1.1.

Purpose of Directories

4.1.2.

Directory as Name-to-File Mapping

4.1.3.

Directory as a Special File Type

4.2.

Directory Structure Models

4.2.1.

Single-Level Directory

4.2.1.1.

4.2.1.2.

4.2.1.3.

4.2.2.

Two-Level Directory

4.2.2.1.

4.2.2.2.

4.2.2.3.

4.2.3.

Tree-Structured Directories

4.2.3.1.

Hierarchical Organization

4.2.3.2.

4.2.3.3.

4.2.3.4.

4.2.4.

Acyclic-Graph Directories

4.2.4.1.

Shared Files and Links

4.2.4.2.

Avoiding Cycles

4.2.4.3.

Reference Counting

4.2.5.

General Graph Directories

4.2.5.1.

4.2.5.2.

Cycle Detection

4.2.5.3.

Garbage Collection

4.3.

Directory Operations

4.3.1.

File Operations within Directories

4.3.1.1.

Search for a File

4.3.1.2.

4.3.1.3.

4.3.1.4.

4.3.2.

Directory Management Operations

4.3.2.1.

Create a Directory

4.3.2.2.

Delete a Directory

4.3.2.3.

List Directory Contents

4.3.2.4.

4.3.3.

Navigation Operations

4.3.3.1.

Change Working Directory

4.3.3.2.

Traverse File System

4.3.3.3.

Path Resolution

4.4.

Pathname and Naming

4.4.1.

4.4.1.1.

Root-Relative Paths

4.4.1.2.

Full Path Specification

4.4.2.

4.4.2.1.

Current Directory Relative

4.4.2.2.

Parent Directory References

4.4.3.

Path Resolution Process

4.4.3.1.

Component-by-Component Resolution

4.4.3.2.

Symbolic Link Following

4.4.3.3.

Mount Point Handling

4.4.4.

Special Path Components

4.4.4.1.

Current Directory

4.4.4.2.

Parent Directory

4.4.4.3.

4.4.5.

Naming Conventions

4.4.5.1.

Case Sensitivity

4.4.5.2.

Character Restrictions

4.4.5.3.

Length Limitations

4.4.5.4.

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