In this recipe, we will learn how to display a welcome message if a user successfully logs in to our CentOS 7 system using SSH or console, or opens a new terminal window in a graphical window manager. This is often used to show the user informative messages, or for legal reasons.
To complete this recipe, you will require a minimal installation of the CentOS 7 operating system with root privileges and a console-based text editor of your choice.
To begin, log in to your system using your root user account and create the following new file with your favorite text editor:
vi /etc/motd
Next, we will put in the following content in this new file:
############################################### # This computer system is for authorized users only. # All activity is logged and regularly checked. # Individuals using this system without authority or # in excess of their authority are subject to # having all their services revoked...