Hashcat combining two wordlists - 0 progress

[zozeri]

Use combinator.bin, pipe its output in a fifo, use the fifo as the wordlist in hashcat with attack mode 0.

Hi, thanks for the reply.
I have managed with combinator.bin to generate a wordlist but rather than output the file I want to pipe it to hashcat as the wordlist - I am not sure what fifo is but I take it its some sort of 'first in first out' list structure. Can you elaborate or give me an idea of how to do this?

****EDIT****
This is what I am currently trying

Code:

hashcat -m 2500 -a 0 FileToCrack.hccap | ./combinator.bin firstList.txt secondList.txt

The result is as if I am just running the combinator by itself - printing to terminal the wordlist.

I have also tried reversing the commands

Code:

./combinator.bin firstList.txt secondList.txt | hashcat -m 2500 -a 0 FileToCrack.hccap

Hashcat now runs but only goes through the first wordlist.