How can you remove an environment variable in Linux?

To remove an environment variable in Linux, you can use the unset command. Here’s how to do it:

1. Open your terminal.

2. Use the unset command:
   To remove an environment variable, type the following command:

   unset VARIABLE_NAME

   Replace VARIABLE_NAME with the name of the variable you want to remove. For example, to remove a variable named MY_VARIABLE, you would use:

   unset MY_VARIABLE

3. Verify the Variable is Removed:
   You can check if the variable has been removed by using:

   echo $MY_VARIABLE

   If the variable has been successfully removed, this command will not output anything.

Note:

• The unset command only removes the variable from the current shell session. If you want to remove a variable permanently, you need to delete or comment out its definition in the shell configuration file (like ~/.bashrc or ~/.zshrc) and then source the file or restart the terminal.