change root user / accounts

[die.boer]

so in my scenario , i had my 1 account setup (root) , but my kids was getting more and more on my pc and doing whatever they do
so i was starting to get worried that they could install/delete stuff ,cause login password is the same as root password on admin account.
PS: i did 1st create 2 new user accounts for them (standard user) , but then found everything they are used to is gone ( they're used to log into my account with everything set up)
so what i did it is create another sysadmin account and then made my usual account standard ,so they can log into my usual account and everything seems like they used to by now, but they cant "change" anything.
if any1 find them self's in the same situation , here are the steps:

basically it goes like this
-Keep your current account (xxx) exactly as it is.
-Create a new account called sysadmin (or similar) and add it to sudo.
-Remove xxx from the sudo group.

like this :
Create the new admin account

sudo adduser sysadmin

You'll be asked to set a password for sysadmin.

Add sysadmin to the sudo group

sudo usermod -aG sudo sysadmin

.

Test the new account
Before removing xxx from sudo, log out and log into sysadmin.
Open a terminal and run:

sudo whoami

It should return:
root
If it does, you're good.

Remove xxx from the sudo group
Log back into sysadmin (important!), then run:

sudo deluser xxx sudo

Verify:

groups xxx

You should no longer see sudo in the list.

Test xxx
Log back into your normal xxx account and try:

sudo apt update

You should get:
xxx is not in the sudoers file. ( or in my case sudo: I'm sorry xxx. I'm afraid I can't do that)

and that's that ...

IMPORTANT :
Whenever you need to do admin tasks

su - sysadmin

hope this helps someone with kiddies on their PC


PS : if there is an alternative way , i'd love to hear (read) it