Disk & Memory: df & du

Every station has limited storage. Two commands help you monitor disk space:

df (disk free) shows how much space is available on each mounted filesystem. Add -h for human-readable sizes:

df -h

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        50G   32G   18G  64% /
tmpfs           2.0G     0  2.0G   0% /tmp

du (disk usage) shows how much space a directory or file occupies:

du -h logs/

4.0K    logs/access.log
12K     logs/error.log
16K     logs/

Summarize a directory

When you only want the total size without listing every file, use -s (summary):

du -sh logs/

16K     logs/

Together: df -h answers "how full is the disk?" and du -sh FOLDER answers "how big is this folder?"

Mission: Storage Audit

The station engineers suspect cargo-bay/ is eating into the limited disk reserves. Before they approve the next data archive, they want a filed report of both the overall disk situation and the folder's footprint.

Display how much space is free on the station's filesystems.
Measure the total size of the cargo-bay/ directory and save that measurement into a file called storage-report.txt.
Create a folder called audit and move storage-report.txt into it.
Display the saved report to confirm it.

Expected result

audit/storage-report.txt holds the human-readable size of cargo-bay/.