How can I get the current disk usage (in %) of my hard drive from the command line?

2 Answers

ncdu

Works well from the command line. It's ncurses-based and interactive.
You can install it with sudo apt-get install ncdu.

Alternatives

• Top ten: du -shx * | sort -rh | head -10
• If you want more fine grained disk usage, you should take a look at the answers here.

By using the df command.

Here's an example output:

$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 303537496 27537816 260580948 10% /
none 950788 252 950536 1% /dev
none 959516 232 959284 1% /dev/shm
none 959516 388 959128 1% /var/run
none 959516 0 959516 0% /var/lock

Also take a look at its manpage.