Installing MinimServer on Linux using su

[simbun]

As per this answer it looks like logname returns the owner of the terminal, whereas $LOGNAME returns the user that executes the current shell.

In my scenario, I logged into the server via putty using account SIMON after which I switched to minimserver (su -i minimserver), and in that shell logname returned SIMON whereas $LOGNAME returned minimserver.

I tend to just use 'id -un' but have no idea how compatiable that is across distributions.