Part 2 in the Basic Linux commands; How to view storage space details and information such as free space on Linux, Part 1 was Navigation, folders and files.
Viewing disk information
Primarily this is done using the Disk file system command df
To view the system disk information in a human readable format (KB, MB, GB and TB) use
df -h
To view as MB use
df -m
View file system types
df -T
Folder sizes
Disk usage (du) can be used for directory sizes
View the current directory size in a readable format summary
du -sh
Or you can specify directory
du -sh directory/foldername
To include 1 level of sub directories in size most to least:
du -h --max-depth=1 | sort -hr
You can change the 1 to 2 or 3 to dive deeper into sub directories.