How to set environment variables in Bash?

To set environment variables in Bash, you can use the export command followed by the variable name and value.

Here's the general syntax:

For example, to set an environment variable named MY_VAR with the value Hello World!, you would run:

You can also set multiple environment variables in a single command by separating them with spaces:

To make the environment variables permanent, you can add these export statements to your ~/.bashrc or ~/.bash_profile file, so they are loaded every time you start a new shell session.

It's important to note that environment variables set in a shell session are only available within that session and its child processes. If you want to make them available to all processes on your system, you can define them in /etc/environment or in individual files in the /etc/profile.d/ directory.