DU & DF – Disk Used and Disk Free

To check available and used space on a disk:

du -h

Outputs used space on current disk in a human readable format.

To check just current directory size:

du -h -d 1

Directory used space, but omitting output for all subdirectories:

du -sh /path/to-your/dir/

Available space on all disks:

df -h
Tested in Debian

Tested in Debian or Pop OS