Understanding the df Command

Basic Usage of df

The df command is used to display the amount of disk space used and available on file systems. It provides a summary of the disk space usage for all mounted file systems in a human-readable format.

Options Available with df

-h (Human-readable)

Display sizes in human-readable format (e.g., KB, MB, GB):

-a (All filesystems)

Include dummy file systems in the output:

-T (Print filesystem type)

Include the filesystem type in the output:

-i (Inodes)

Display inode information instead of block usage:

--total

Display a total for all file systems:

--help

Display help information for the command:

--version

Display the version information of the command:

Examples of df Command

Display Disk Space Usage

This command displays the disk space usage for all mounted file systems.

Display Human-readable Output

This command displays the disk space usage in a more readable format with units (KB, MB, GB).

Display Filesystem Types

This command displays the type of each filesystem along with the usage statistics.

Understanding Disk Space Information

The output of the df command typically includes the following columns:

• Filesystem: The name of the filesystem.
• Size: Total size of the filesystem.
• Used: Amount of space used.
• Available: Amount of space available for use.
• Use%: Percentage of space used.
• Mounted on: The mount point of the filesystem.

Summary of Options