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There is a Grouper report that you can have emailed to you daily, or you can run it manually from GSH. This report shows a summary of the total state of your grouper installation (e.g. how many memberships/groups/etc, how many unresolvable subjects, etc), and it shows the status of the last day's worth of activity (e.g. how many new membership, how many loader errors).
To run this report from GSH, just run this command: GrouperReport.report();
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