How to add environment variable assignments on Elementary OS 6.1 via the terminal emulator and the bash shell?

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Environment variables are dynamic values that can affect the behavior of processes and programs running on a computer's operating system.
These variables store information such as system configuration settings, user preferences, or data that is used by various software applications.
Environment variables are used to control how programs behave and to provide them with necessary information.
CTRL + SHIFT + T
echo $SHELL
My output is
/bin/bash
Your output might be one of the following:

Use your favorite text editor to edit the shell configuration file. I'm going to use nano. You can use nano, vi, vim, gedit and even VS Code.
nano ~/.bashrc
In ~/.bashrc, add the variables at the end:
export GITHUB_TOKEN="glpat-Z2hxZY6BhDPyZwQbYuZm"
export DOCKER_TOKEN="dckr_pat_ORhj8i17IaMZ8gvLMqZgdKnkD9Z"
export PG_USER="my_user"
export PG_PASS="d9l85nbp"
if you are using nano, follow the order:
CTRL + X;
Y and press Enter;
source ~/.bashrc
echo $GITLAB_TOKEN
echo $DOCKER_TOKEN
echo $PG_USER
echo $PG_PASS
You've made it!

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