🍱 Env Vars
The many ways to configure Environment Variables in Linux
1. Export
This will setup an environment variable temporarily for the life of the shell session
export FOO="bar"
2. Bash
Update the .bashrc or .bash_profile to set the variable before every shell session.
nano ~/.bashrc
export FOO="bar"
3. System Environment
Set it permanently system wide.
nano /etc/environment
export FOO="bar"
4. .env
Create a .env file in one of your project directories. Your application may need a library like dotenv in Node.js to read the value.
export FOO="bar"
5. Systemd
See next video for setting environment variables with Systemd.