The mc head command displays the first n lines of an object, where n is an argument specified to the command. mc head does not perform any transformation or formatting of object contents to facilitate readability. You can also use mc head against the local filesystem to produce similar results to the head command-line tool. Syntax Example The following command returns the first 10 lines of an object in the mydata bucket on the myaistor AIStor deployment:

The mc tree command lists all prefixes inside an AIStor bucket in a tree format. The command optionally supports listing all objects inside of bucket at each prefix, including the bucket root. You can also use mc tree against a local filesystem directory to produce similar results to the tree command-line tool. Syntax Example The following command prints a complete tree of all objects at any depth in the mydata bucket on the myaistor AIStor deployment:

This page covers settings that control behavior related to AIStor bucket notifications. You can establish or modify settings by defining: an environment variable on the host system prior to starting or restarting the AIStor Server. Refer to your operating system’s documentation for how to define an environment variable. a configuration setting using mc admin config set. If you define both an environment variable and the similar configuration setting, AIStor uses the environment variable value.

The mc table remove command deletes an Iceberg table on an AIStor cluster. By default, this command removes only the table metadata from the Iceberg catalog. Use the --purge flag to also delete the underlying table data. Example The following command removes the sales_data table from the prod namespace in the analytics warehouse on the myaistor AIStor cluster:

This page documents settings for configuring an Webhook service as a target for Bucket Notifications. See Publish Events to Webhook for a tutorial on using these settings. You can establish or modify settings by defining: an environment variable on the host system prior to starting or restarting the AIStor Server. Refer to your operating system’s documentation for how to define an environment variable. a configuration setting using mc admin config set. If you define both an environment variable and the similar configuration setting, AIStor uses the environment variable value.

This page documents settings for configuring an POSTGRES service as a target for Bucket Notifications. See Publish Events to PostgreSQL for a tutorial on using these settings. You can establish or modify settings by defining: an environment variable on the host system prior to starting or restarting the AIStor Server. Refer to your operating system’s documentation for how to define an environment variable. a configuration setting using mc admin config set. If you define both an environment variable and the similar configuration setting, AIStor uses the environment variable value.

This page documents settings for configuring an NSQ service as a target for Bucket Notifications. See Publish Events to NSQ for a tutorial on using these settings. You can establish or modify settings by defining: an environment variable on the host system prior to starting or restarting the AIStor Server. Refer to your operating system’s documentation for how to define an environment variable. a configuration setting using mc admin config set. If you define both an environment variable and the similar configuration setting, AIStor uses the environment variable value.

The mc idp ldap policy detach command detaches one or more polices from an entity. Syntax Example The following example detaches the policy userpolicy from the user bobfisher on the myaistor deployment.

Required release version This command is available in AIStor Client RELEASE.2025-03-31T22-38-30Z or later. The functionality requires AIStor RELEASE.2025-03-27T23-09-45Z or later. The mc idp ldap accesskey sts-revoke command removes security token service (sts) credentials associated with an account. Revoke all STS tokens for an account, or specify the type(s) of STS tokens to revoke for an account.

The following section documents environment variables and configuration settings for customizing AIStor’s global audit event queue. These settings control all configured audit targets. Settings Audit event queue dir Environment Variable MINIO_AUDIT_QUEUE_DIR Configuration Setting audit_event_queue_dir Specify the directory path to enable AIStor’s persistent event store for undelivered messages, such as /opt/minio/audit/events.