Environment variables are configurations that control how programs operate on a computer, and they can be changed using the ZSH (Z shell) command line.
Temporary environment variables last only as long as the current terminal session, but permanent ones are stored in configuration files like “.zshrc.”
To create a temporary variable using ZSH, use the export command with the name of the variable and its desired value (for example, export VARNAME=VALUE).
To create a permanent environment variable, add the variable and its value to the “.zshrc” file using the export command.
It is essential to use clear, descriptive variable names, uppercase letters, and double quotes to wrap values with spaces or special characters.
After making changes to the “.zshrc” file, users should use the source command to implement changes without restarting the terminal or log out and log back in to start a new session.
Back up the “.zshrc” file before making any changes to it as a precaution.
