Github user cestella commented on the issue:
https://github.com/apache/incubator-metron/pull/354
There are functions to read and write from local disk and HDFS
[here](https://github.com/apache/incubator-metron/tree/master/metron-platform/metron-management#file-functions).
The REPL does allow you to log to disk because it uses a proper GNU readline
implementation. You can set it (and a number of other options) by modifying
your ~/.inputrc. [Here](http://aeshell.github.io/docs/settings/index.html) are
the full options supported.
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