Multiple auto logins

Not sure how to type this but here it goes . We want to set up auto logins for mutiple 'Nix boxes.

OK here's the deal:
we want to have a 'Nix box that stores a passwd in a variable, then we want other systems to look at that variable and auto login.

Example scripts would be helpful!!!
Thanx in advance!!!

It is not logical to try to do it this way - here is why.

System A (your 'Nix box) stores a password in a variable. To access that information, the other systems (B, C, D, ...) would have to FIRST access system A to find the variable to get the password to gain access....and since the other 'system' has gained access to read the variable, why bother since it's gained access?

If you are looking for access without using passwords (once it's all set up) try ssh which can be loaded onto different OS systems and will give you 'trusted' accounts/hosts which will allow your automatic logins.