df
df — show how much disk space is free. It is one of the commands you type in a terminal, and everything below is produced by running it: the output, the error you get when it goes wrong, and a terminal you can type it into yourself.
What it prints
Run against a small demo project — the same one you get in the terminal below, so the output is what you will see, not an illustration of it.
$ df -hFilesystem Size Used Avail Use% Mounted on simfs 10G 2.0G 8.0G 20% /
Other commands
Try it yourself
Same files as above. Nothing here can break, and nothing leaves your browser.
Written by Mikhail Kuzmitskii