But actually I don't see the problem with having multiple filters. You can just treat them as independent subscriptions on the relay side, no?

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I don’t see the problem either. Prolly cause I AM CURRENTLY dumb.

Can’t a REQ simply have just one filter? So what if it can have more?

Please enlighten the problem…

I‘m trying to craft a filter using just Unix commands. Instead of

tac … | grep -e … -e … | grep -e … -e … | head -n 10

I need to somehow do a union of multiple of these. I can not think of another solution than cat and subprocesses.

How are those performance-wise on big files? I always heard that GNU grep is fastest.