How do I delete shell variables?

How do I delete shell variables in my terminal?

You can delete shell variables using the unset command followed by the variable name. For example, unset VAR_NAME.

Can I delete multiple variables at once?

Yes, you can delete multiple variables by listing them with the unset command, like this: unset VAR1 VAR2 VAR3.

What happens if I try to use a deleted variable?

If you try to use a deleted variable, it will return an empty value or an error, depending on the context.

Is there a way to check if a variable is set before deleting it?

Yes, you can check if a variable is set using the if statement: if [ -n "$VAR_NAME" ]; then unset VAR_NAME; fi.