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Top Forums UNIX for Advanced & Expert Users Launching a process in remote machine Post 302467610 by jim mcnamara on Saturday 30th of October 2010 08:19:46 AM
Old 10-30-2010
How is the remote box to know when you want to run your job? Telepathy does
not work well in the UNIX world Smilie

With no communication at all:
use cron, set the process to run at a fixed time interval

A> Otherwise there has to be some kind of interaction. If you want system information, try setting up snmp, then request the information when you want it.

B> One system I had long ago: there was a daemon run by a special user account. It read email sent to that account. The subject line was a command to run. The daemon ran the command and emailed the output back. There are huge security issues with this nowadays.

modern way to to B>
nfs mount a filesystem shared on the two boxes. Create/edit files with special names in a restricted directory to do what B> above did.

Bottom line: ssh is much better, even if you have to script it. The choices above (except cron & snmp) can have problems with security
 

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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be enabled, unless you've done some clever use of multiple identities) It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth- erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration). If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary) SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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