/etc/issue and /etc/issue.net files
/etc/issue and /etc/issue.net files can be
used to print any logon messages to users logging on to a Linux
machine, the message appears BEFORE the login prompt of the login
console.
Many escape sequences can also be used in
these files to print important information about the system onto
the console
The issue.net file has same features and
properties the only difference being that the /etc/issue.net file
holds the information that is display to users logon in via telnet
some escape characters that can be used are
mentioned in the table below
|
Character |
Description |
|
\d |
Insert the current
date. |
|
\o |
Insert the domain name
of the system. |
|
\r |
Insert the release
number of the kernel, e.g., 2.4.20. |
|
\s |
Insert the system name,
the name of the operating system. |
|
\t |
Insert the current
time. |
|
\u |
Insert the number of
current users logged in. |
|
v |
Insert the version of
the OS. |
|
\n |
Insert the node name of
the machine, also known as the hostname. |
|
\m |
Insert the architecture
identifier of the machine, e.g., i686 |
You must remember one thing that /ect/issue.net
file only effects the logons via telnet and any access via SSH is
not controlled by the issue.net file
|