How do I delete environment variables in Linux?

How do I delete environment variables in Linux?

You can delete environment variables in Linux using the unset command. For example, to delete a variable named MY_VAR, you would use unset MY_VAR.

Can I delete multiple variables at once?

Yes, you can delete multiple variables by using the unset command followed by the variable names, like this: unset VAR1 VAR2 VAR3.

Will deleting an environment variable affect running processes?

Yes, deleting an environment variable will affect any new processes that are started after the variable is deleted, but it won't affect processes that are already running.

Is there a way to make the deletion permanent?

To make the deletion permanent, you need to remove the variable from your shell's configuration files, like ~/.bashrc or ~/.bash_profile, depending on your shell.