Use the Linux df command to show free disk space
By Alvin Alexander. Last updated: June 3 2016
Linux free disk space FAQ: How do I show free disk space on a Unix or Linux system?
The Linux df command stands for "disk free". It is meant to show Linux disk space information, including disk space that is used, disk space remaining, and how filesystems are mounted on your Linux (or Unix) system. The Linux df command not only shows the free disk space on your local computer, it also shows the free disk space on all networked filesystems that are mounted by your Linux system.