Directory using the most disk space

[Michael Hipp]

Chong Yu Meng wrote:
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> Hi all,
> 
> I have a filesystem that is about 90% full, and I know that an
> application is probably dumping a lot of log data into a directory. I
> don't own the server or the directory, but I do have sudo access.
> 
> This is probably a stupid question, but is there a command for locating
> the directory taking up the most disk space?

du

Michael