I am following the instructions in my bitcoin.conf file, it writes:

It is set at intialization time
# using the output from the script in share/rpcuser/rpcuser.py after providing a username:
#
# ./share/rpcuser/rpcuser.py alice

However, I can't finde any rpcuser folder or rpcuser.py file. Am I supposed to have them? Is this normal? I already ran

sudo apt-add-repository ppa:bitcoin/bitcoin
sudo apt-get update
sudo apt-get install bitcoin-qt

So, if I don't have the file, where should I get it from? Does this mean my bitcoin installation is incomplete? I havent synced all the blockchain yet..

Anyway, any advice is welcome.