How to output the results to the specified file in the win10 environment?

[2077himasi]

like gotator -sub domains.txt -depth 1 -numbers 1 -o 2.txt?

[NotoriousRebel]

A bit late but standard redirection works within windows as well you can just follow examples in your case a slightly modified verison should suffice.
gotator -sub domains.txt -depth 1 -numbers 1 -silent > 2.txt