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Top Forums UNIX for Dummies Questions & Answers Running commands on remote machines Post 302740683 by joeyg on Thursday 6th of December 2012 03:00:03 PM
Old 12-06-2012
You may want to reconsider

Since you did not specify what you are trying to monitor, I wanted to think of this differently...
There are 600 computers you want to analyze. So, if it take 60 seconds to connect, execute remote commands, transmit results file back, do something (on master computer), and then go to next remote computer.
That would mean ten hours, start to finish, if done sequentially. I suppose you could write something to do some in parallel?

Which brings me back to my initial premise...that this may not be possible based on the number of remote computers to analyze.

In human terms...
(a) you call 600 people to find out if they are coming for dinner
(b) receive emails of those who cannot attend

Probably easier to process the (b) list. Likewise, easier to process error files from remote computers.
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Poll(4) 						     Kernel Interfaces Manual							   Poll(4)

NAME
Poll - Contains information specifying when the UNIX-to-UNIX Copy Program (UUCP) should poll designated remote computers SYNOPSIS
/usr/lib/uucp/Poll DESCRIPTION
The /usr/lib/uucp/Poll file contains information for polling remote computers. Each entry in the Poll file contains the name of a remote computer to call, followed by a <TAB> character, and a sequence of hourly intervals expressed in digits. These are the hourly intervals at which the local system polls a remote system; you must specify interval times as digits between 0 and 23. The format of entries in the Poll file is: sys-name<TAB>hour Note that you must be logged in as root to edit the Poll file, which is owned by the uucp login ID. The Poll file is used with the crontabs/uucp file, the uudemon.hour script, and the uudemon.poll script. Together, these files are respon- sible for initiating automatic calls to remote systems to perform certain maintenance tasks. EXAMPLES
The following example provides polling of computer eagle every 4 hours: eagle 0 4 8 12 16 20 The follwing example provides polling of computer hera every hour: hera 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 FILES
Contains all the configuration files for UUCP, including the Devices file. Describes accessible remote systems. Initiates file transport calls to remote systems. Polls remote systems listed in /usr/lib/uucp/Poll file. The uucp file that contains instructions for the cron daemon. RELATED INFORMATION
Commands: crontab(1) Daemons: cron(8) delim off Poll(4)
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