How can I execute a script on every player login?

[freakingfred 10]

I wrote a script earlier today and I am executing it from my mission init.sqf. The script only seems to execute the first time a player logs in to the server. If they abort to the lobby and then re-enter it will not execute again.

How do I make sure that the script will execute upon every player login, even if they abort to the lobby and then re-enter?

[Blueblood 10]

If you put "Local player" inside the condition of a trigger without speech marks it will activate on every player