In this insightful lecture, we explore the structure and management of files and directories in UNIX-like systems, covering key concepts and essential commands.

Files and Directories

Learn about the different types of files in UNIX: ordinary files, directories, and special files. Understand the basic file system structure, starting from the root (`/`) and branching out to important subdirectories like `/var` and `/home`

Paths and Commands

Understand the difference between absolute and relative paths. Get familiar with commands such as `ls` to list directory contents, `mkdir` and `rmdir` to create and remove directories, and `touch` to create empty files.

File System Hierarchy

Explore the hierarchy of UNIX file systems, from physical volumes to logical volumes managed by the Logical Volume Manager (LVM). Learn how logical volumes store file systems and other structures.

UNIX File Representation

See how UNIX treats everything as a file, whether it's an ordinary file, a directory, or a special file representing hardware or virtual devices.

Inodes and File Types

Discover the importance of inodes, which store all metadata about a file, including its type, permissions, ownership, size, and disk location. Commands like `ls -l` reveal inode information. Learn about different file types: ordinary files, directories, and special files.

Permissions and Access

Master UNIX's permission system, where read (4), write (2), and execute (1) bits define access rights. Understand how the umask setting determines default permissions for new files and directories.

AIX File Systems and Administrative Commands

Learn how AIX uses logical volumes within volume groups for storage. Get to know administrative commands like `mount` to show mounted file systems, `df` to display file system usage, and `lsvg` to show volume group information.

This lecture covers the core aspects of UNIX file system structure, file and directory management, and volume management.

Watch the video for a deeper understanding and practical exercises to enhance your UNIX skills.