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Recently I wanted to extract certain data from an output log. Here’s part of the log file:                   2015-01-06 11:33:03 b.s.d.task [INFO] Emitting: eVentToRequestsBolt __ack_ack [-6722594615019711369 -1335723027906100557] 2015-01-06 11:33:03 c.s.p.d.PackagesProvider [INFO] ===—> Loaded package com.foo.bar 2015-01-06 11:33:04 b.s.d.executor [INFO] Processing received message source: eventToManageBolt:2, stream: __ack_ack, id: […]