I advice STRONGLY not to give yourself GID 0. SUDO is not there to make things compicated. Only reason to make another root account (wether home directory is /root/ or custom directory i.e. /home/root2/) is that there is two administratos in system who does not wish to share one root password.
Otherwise, use sudo. And assuming you are not seasoned Unix-user, there is also risk you forget what tools are root-only and what is for common users.
BUT, if you feel that you have secure normal user (i personally use STRONG password with this method), i let my user (i.e. tatu.staff / uid=1xxx, gid 50) run SUDO without password. Therefore I never mix up what is only for root and what's for user.
Use instructions above to create sudoers file (and corresponding groups) to make specific user to run SUDO without password or see example file i'll paste here:
# This file MUST be edited with the 'visudo' command as root.
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
# See the man page for details on how to write a sudoers file.
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
YOURUSER ALL=(ALL) NOPASSWD:ALL
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
%wheel ALL=(ALL) NOPASSWD:ALL
# See sudoers(5) for more information on "#include" directives:
YOURUSER being your username, that line allowing specific user to run SUDO without password.
all users in group SUDO need to give password.
all users in group wheel can run sudo without password -- useful if you want to give passwordless SUDO ACCESS to multiple users, which is by the way, simply put A VERY BAD IDEA.
- Remember the % charachter before GROUP names.
- One can edit /etc/group directly, but it is NOT adviced. Use ADDGROUP to edit, see more info by typing: man addgroup
I must stress again that ALWAYS edit sudoers file by using VISUDO command, NEVER directly with editor. That ensures that you always get valid sudoers file - typing errors or bad statements etc. are very bad thing in such important file, and visudo saves you all that trouble you might not be able recover by yourself, and i bet first answer to question after this is "always use visdo. didn't they tell you that? oh they did? What is wrong with you?" or something alike ;)
Greetings from Finland - it's nice, quite nice winter here, only -10
Celsius, not those awful lower than -25 C temperatures.