Question about Capistrano file

In this link #133 Capistrano Tasks - RailsCasts

It shows what would be call capistrano.txt that you have to modify. It
shows

Directory Structure

myapp/releases
myapp/current → releases/20081019001122
myapp/shared

cap deploy

deploy:update_code
deploy:symlink_shared
deploy:symlink
deploy:restart

I can’t find this file for the life of me. I’ve deployed without
touching this files but It has to be somewhere. Anyone know where I find
this file?

You want config/deploy.rb.