Alternative network messaging? Post: 302718445

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Top Forums Shell Programming and Scripting Alternative network messaging? Post 302718445 by DGPickett on Friday 19th of October 2012 03:28:03 PM

10-19-2012

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I suppose it depends on what you call sending a message. email works for most of us. You can ssh between hosts, but to message people youu need to find specific tty names as well. If you want them to reply, you need some sort of artifact there for them to send through. I once tried something with mmap() atached NFS files, but changes were not picked up unless I did an ls on the end remote from the write. Maybe if everyone tailed a file and wrote to that file under an id header line in tight blocks, you would have a logged chat session. I have done that. If you have no NFS, you can "ssh ... tail -f chatfile &" to see the dialog on one xterm and do an ssh to write blocks from another. You write blocks by composing them in an env variable and then echoing the variable as one atomic write. Oh, I said that word, but the command is echo not write.

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LEARN ABOUT REDHAT

ssh-keysign

SSH-KEYSIGN(8)						    BSD System Manager's Manual 					    SSH-KEYSIGN(8)

NAME

     ssh-keysign -- ssh helper program for hostbased authentication

SYNOPSIS

     ssh-keysign

DESCRIPTION

     ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during hostbased authentication with
     SSH protocol version 2.

     ssh-keysign is disabled by default and can only be enabled in the the global client configuration file /etc/ssh/ssh_config by setting
     HostbasedAuthentication to ``yes''.

     ssh-keysign is not intended to be invoked by the user, but from ssh(1).  See ssh(1) and sshd(8) for more information about hostbased authen-
     tication.

FILES

     /etc/ssh/ssh_config
	     Controls whether ssh-keysign is enabled.

     /etc/ssh/ssh_host_dsa_key, /etc/ssh/ssh_host_rsa_key
	     These files contain the private parts of the host keys used to generate the digital signature.  They should be owned by root, read-
	     able only by root, and not accessible to others.  Since they are readable only by root, ssh-keysign must be set-uid root if hostbased
	     authentication is used.

SEE ALSO

     ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)

AUTHORS

     Markus Friedl <markus@openbsd.org>

HISTORY

     ssh-keysign first appeared in OpenBSD 3.2.

BSD
								   May 24, 2002 							       BSD