The Linux user running Bitcoin Core should not have sudo permissions

[epiccurious]

We are currently launching bitcoin-qt as an administrator with super user permissions.

Need to create a separate user like "bitcoin" that has restricted permissions.

Also lock down what ports that user can communicate on.

Determine which parts of this guide video are relevant for all general use cases and if we want to use the admin to control services to control the users that control the binaries: https://m.youtube.com/watch?v=_Hrnls92TxQ

[epiccurious]

Updating this issue to HARD since it involves researching best security practices for Linux services.

[epiccurious]

Removing from Adding back to the MVP milestone.

[epiccurious]

sudo adduser --disabled-password --gecos "" bitcoin
sudo usermod -aG bitcoin $USER
sudo cp bitcoin/bin/* /usr/local/bin/
xhost +si:localuser:bitcoin

https://www.tecmint.com/switch-user-account-without-password/

sudo vi /etc/pam.d/su

# This allows root to su without passwords (normal operation)
auth       sufficient pam_rootok.so

# Allow users in group bitcoin to su to bitcon account without password
auth       [success=ignore default=1] pam_succeed_if.so user = bitcoin
auth       sufficient    pam_succeed_if.so use_uid user ingroup bitcoin

Exec=/bin/bash -c 'su bitcoin -c "bitcoin-qt %u"'

mkdir .bitcoin
chown bitcoin .bitcoin/
chmod 750 .bitcoin/