How do I delete an exported environment variable?

Question

Before installing gnuplot, I set the environment variable `GNUPLOT_DRIVER_DIR = /home/gnuplot/build/src`. During the installation, something went wrong. I want to remove the `GNUPLOT_DRIVER_DIR` environment variable. How can I achieve it?

Answer 1

You can remove any environment variable by using the 'unset' keyword. So to remove the variable in your example you would execute 'unset GNUPLOT_DRIVER_DIR'. The variable now no longer exists.