SELECT r.rolname as username,r1.rolname as "role"
FROM pg_catalog.pg_roles r LEFT JOIN pg_catalog.pg_auth_members m
ON (m.member = r.oid)
LEFT JOIN pg_roles r1 ON (m.roleid=r1.oid)
WHERE r.rolcanlogin
ORDER BY 1;
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https://dba.stackexchange.com/questions/136858/postgresql-display-role-membersUne commande qu'elle est bien :
namei /path/to/the/deepest/file
Affiche toutes les permissions + les owners de toute l'arborescence jusqu'au fichier.
via nicolasc
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http://linux.about.com/library/cmd/blcmdl1_namei.htm