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Full Discussion: replacing old motd with new motd
Top Forums Shell Programming and Scripting replacing old motd with new motd Post 58703 by RTM on Monday 29th of November 2004 07:36:26 PM
Old 11-29-2004
Quite a few ways of doing it - first you need to know what works in your environment as far as getting the file there with the least amount of typing.

Create your new motd - then either ftp, rcp, scp, or some other way of getting the file to all the servers (push it directly onto the old /etc/motd OR move the original to motd.old and then push your new file). Since the motd isn't needed for booting, you could just overwrite it.

Create a file with the server names and do a shell script that loops through doing the ftp/rcp/scp to each server:

Example (test before using):
Code:
#!/bin/csh -f
set servers = `cat /appropriate/path/myserver.list`
foreach x ($servers)
   /appropriate/path/scp /appropriate/path/newmotd $x\:/etc/motd
end
exit

 

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LEARN ABOUT LINUX

motd.tail

MOTD.TAIL(5)						   Debian Administrator's Manual					      MOTD.TAIL(5)

NAME

       motd.tail - Template for building the system message of the day

DESCRIPTION

       On Debian systems, the system message of the day is rebuilt at each startup, in order to display an accurate information. /etc/motd.tail is
       the file to edit permanent changes to the message of the day.

OVERVIEW

       The initiation script /etc/init.d/bootmisc.sh prepends a line containing information about the system  to  /etc/motd.tail  and  stores  the
       resulting  file in /var/run/motd. /etc/motd is a symbolic link to /var/run/motd.  This is done to prevent changes to /etc as the system can
       not assume /etc to be writable.

       Changes to /etc/motd effectively end up in a file under /var/run which will be regenerated upon reboot.

       A symbolic link to a different file, such as /etc/motd.static disables this behaviour.

FILES

       /etc/init.d/bootmisc.sh
	      The initiation script which builds /var/run/motd

       /etc/motd
	      Symbolic link to the system message of the day at /var/run/motd

       /etc/motd.tail
	      Template for building the system message of the day

       /var/run/motd
	      System message of the day file rebuilt at each computer start

SEE ALSO

       login(1), issue(5), motd(5).

Debian								    2007-04-28							      MOTD.TAIL(5)
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