The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

19.9.4 Displaying Disk Quotas

To display a user's disk usage:

# quota username

To display a group's disk usage:

# quota -g group

To display information about file systems where usage is over the quota limits:

# quota -q

Users can also use the quota command to display their own and their group's usage.

For more information, see the quota(1) manual page.