Change the greeting message

Case of GNU/Linux

To change the login message under Linux it is possible to use the '/etc/issue' file, it is a text file that contains the message to display. It is possible to use escape characters such as \d for the date \t for the time... So just edit the file and put the message you want.

Case of OpenBSD

To change the message under OpenBSD edit the file '/etc/motd'. In this case it is not possible to use escape characters..