What is the command for disk usage in Linux?

The most common command for checking disk usage in Linux is df.

Understanding df

The df command (short for "disk free") displays the amount of disk space used and available on your file system. It provides information about mounted file systems, including:

• Filesystem: The name of the mounted file system.
• 1K-blocks: The total number of 1KB blocks on the file system.
• Used: The number of 1KB blocks currently used.
• Avail: The number of 1KB blocks available for use.
• Use%: The percentage of disk space used.
• Mounted on: The mount point of the file system.

Examples

Here are some examples of using the df command:

• Displaying all mounted file systems:

df

• Displaying information about a specific file system:

df /home

• Displaying information in human-readable format:

df -h

• Displaying information about all file systems in a specific directory:

df /path/to/directory

Practical Insights

The df command is a valuable tool for monitoring disk space usage and identifying potential issues. It can help you:

• Determine if you have enough disk space available.
• Identify file systems that are nearing capacity.
• Track disk space usage over time.
• Troubleshoot disk space problems.

Conclusion

The df command is a powerful and versatile tool for checking disk usage in Linux. By understanding its options and usage, you can effectively monitor and manage disk space on your system.