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/var/log/auth.log on a busy SSH-exposed host grows at several megabytes per day. A year's worth of auth logs on a cluster's edge node is routinely 2–10GB. The naive approach — read_file_to_string/3, then string_codes/2, then a DCG over the entire code list — a...

Every administrative command issued against production infrastructure carries an implicit precondition: the system is in the state the operator believes it to be in. zpool replace requires the failing disk to be in the specified pool. qm clone requires the sou...