Login /logout script hooks

[Steven J Lamb]

I have been looking for a good example of a way to execute scripts when
there is a login or logout. I haven't yet found a good example and
unfortunately all of my attempts have failed to do anything. Any help or
suggestions as to where I can find a good example of running a shell script
when someone logs in or logs out. I would much appreciate it.

Thanks in advance.

Steven Lamb