Hashcat combining two wordlists - 0 progress

[zozeri]

Ok I have tried but it just seems to be doing the same as just using combinator to output a file. I have added piping between the combinator and hashcat as follows;

Code:

mkfifo blah.txt
./combinator.bin firstList.txt secondList.txt > blah.txt |
hashcat -m 2500 -a 0 handshake.hccap blah.txt

The result of the above is this;

Code:

mkfifo: cannot create fifo ‘blah.txt’: File exists
mkfifo: cannot create fifo ‘./combinator.bin’Initializing hashcat v2.00 with 2 threads and 32mb segment-size...

: File exists
mkfifo: cannot create fifo ‘firstList.txt’: File exists
mkfifo: cannot create fifo ‘secondList.txt’: File exists
Added hashes from file handshake.hccap: 1 (1 salts)
Activating quick-digest mode for single-hash with salt

[s]tatus [p]ause [r]esume [b]ypass [q]uit =>

Input.Mode: Dict (blah.txt)
Index.....: 1/1 (segment), 0 (words), 0 (bytes)
Recovered.: 0/1 hashes, 0/1 salts
Speed/sec.: - plains, - words
Progress..: 0/0 (100%)
Running...: --:--:--:--
Estimated.: --:--:--:--


Started: Sun Feb 14 00:46:51 2016            
Stopped: Sun Feb 14 00:46:51 2016

I have tried with and without piping in every combination possible
not sure what to do here.