To create persistent environment variables, I add the script file to /etc/profile.d directory, for example:

# my script

export MY_VAR=var_value

This works properly for current user:

alex@alex-64:~$ echo $MY_VAR

var_value

Now I need the same environment variables for the root user, but /etc/profile.d script doesn't work for root:

alex@alex-64:~$ echo $MY_VAR

var_value

alex@alex-64:~$ sudo su

root@alex-64:/home/alex# echo $MY_VAR



root@alex-64:/home/alex# 

How can I set the same variables for the root?