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. https://www.cyberciti.biz/faq/df-command-examples-in-linux-unix/ #Linux #FreeBSD #Unix #macOS