Adding 4 digit variable number to Name wordlist

[DKblue]

Code:

for i in {1722..2017}; do echo $i | sed 's/\(.\)/\$\1 /g'; done > rules/add_year.rule

It seems your code is quite a smart automatic way to creat add_year rules ,but where and how should I run your code?
paste to cmd or elsewhere?
Sorry for newbie thoughts.