How can I view all current environment variables?

To view all current environment variables in a Linux terminal, you can use one of the following commands:

1. Using printenv:

   printenv

2. Using env:

   env

3. Using set (this also shows shell functions):

   set

These commands will display a list of all environment variables along with their values in your current session. Each variable will be shown in the format VARIABLE_NAME=value.