/etc/issue is a text file which contains a message or system
identification to be printed before the login prompt. It may contain various
@char and \char sequences, if supported by the
getty-type program employed on the system.
This page is part of release 5.13 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the latest
version of this page, can be found at https://www.kernel.org/doc/man-pages/.