Use this command: df -h In the "Mounted on" column look for the name of the disk. Free space is shown in the "Avail" column.
To show just the available space for a specific disk: df -h | grep DISKNAME | awk '{print $4}' Substitute DISKNAME with the name of the disk.
Show a summary of disk usage: du -sh This shows free space as a number (eg 304G).
My latest blog post: Sheeple: Are they succumbing to fake news, misinformation, and propaganda. (posted 2025-09-24). My latest podcast: OJB's Podcast 2029-09-09 Kiwi Values.