I had to do a pam config recently. Having only tweaked a few settings previously, it was kind of intimidating as I was doing some security-type stuff and had t

I had to do a pam config recently. Having only tweaked a few settings previously, it was kind of intimidating as I was doing some security-type stuff and had to rewrite the config. I locked myself out more times than I care to remember; thank God I was working (mostly) in virtual machines. This is especially a problem since the necessary pam settings vary from distro to distro. If you really want to, test it on a vm that replicates your machine first and make sure you document exactly what to do to get it working. To be clear, it should be fine if you're just adding a module, but sometimes getting the exact settings can be hard, so make sure to do it in a vm first and be careful. Just trying to keep others from going through what I went through.