Do not call putenv() with a pointer to an automatic variable as the argument

New post here:https://bladesu.github.io/learning/linux_app/process/auto_vara_n_putenv

Here is the result of my: Do not call putenv() with a pointer to an automatic variable as the argument. This quite simple rule take me some time to find out why. And a little surprise here, I find there are the rules defined by CERT about C programing. That is cool! Good job, physicists.