nixCraft published a tutorial about how to use the df command in Linux.
How to use df command in Linux / Unix {with examples}
We use the df command to find total disk space and available space on a Linux / Unix file system. Let us see how to use the df command to view the amount of free space left on your Linux, macOS, *BSD and Unix file system. We will also explain how to automate disk space monitoring and send an email alert or push notification to your mobile device.
