mmm what the -r actually do !!

[c4ir0]

┌──(kali㉿kali)-[~]
└─$ shuffledns -d subs -list words.txt -r resolver.txt

       __        ________        __       
  ___ / /  __ __/ _/ _/ /__  ___/ /__ ___
 (_-</ _ \/ // / _/ _/ / -_)/ _  / _ \(_-<
/___/_//_/\_,_/_//_//_/\__/ \_,_/_//_/___/ v1.0.8

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[FTL] Program exiting: resolver file doesn't exists

I just wanna know what should the resolver.txt file must contain ?!?
and thx as always for being big helpers with the many times I asked in and got the solution ❤

[ehsandeep]

@c4ir0 please do not tag individuals, opening a discussion should be sufficient.

as the help menu suggest, in order to perform brute force you need to provide dns resolver list, you can get it from https://github.com/trickest/resolvers

   -r, -resolver string    File containing list of resolvers for enumeration

[c4ir0]

srry for mentioning and thx for help, will take care of the details next time