quota

quota − display disk usage and limits

quota [ -guv | q ]
quota [ -uv | q ] user
quota [ -gv | q ] group

Quota displays users’ disk usage and limits. By default only the user quotas are printed.

−g

Print group quotas for the group of which the user is a member. The optional

−u

flag is equivalent to the default.

−v

will display quotas on filesystems where no storage is allocated.

-q

Print a more terse message, containing only information on filesystems where usage is over quota.

Specifying both −g and −u displays both the user quotas and the group quotas (for the user).

Only the super-user may use the −u flag and the optional user argument to view the limits of other users. Non-super-users can use the the −g flag and optional group argument to view only the limits of groups of which they are members.

The −q flag takes precedence over the −v flag.

Quota reports the quotas of all the filesystems listed in /etc/fstab. For filesystems that are NFS-mounted a call to the rpc.rquotad on the server machine is performed to get the information. If quota exits with a non-zero status, one or more filesystems are over quota.

quota.user located at the filesystem root with user quotas
quota.group located at the filesystem root with group quotas
/etc/fstab to find filesystem names and locations

quotactl (2), fstab (5), edquota (8), quotacheck (8), quotaon (8), repquota (8)