The Live Tail Command Line Interface (CLI) is a standalone application that allows you to start and use a Live Tail session from the command line, similar to tail -f. The output is directed to stdout - so you can pipe the output to commands (grep, awk etc)

Source: SumoLogic/livetail-cli: Download the Sumo Logic Live Tail CLI tool.

Example:

livetail '_sourceCategory=production/haystack*' | grep 'needle'

Exactly what I was hoping would exist. I’ve put years into learning Unix text processing, so grep and sed are second nature. Why relearn everything?