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Top Forums UNIX for Dummies Questions & Answers ksh to check second time difference between two servers Post 302814147 by depam on Tuesday 28th of May 2013 09:15:07 PM
Old 05-28-2013
ksh to check second time difference between two servers

I am currently setting up a public key authentication between servers. The goal is to get the date via `ssh hostname date` on all the 4 remote servers , put the value in a text file on the central server and compare the date (specifically seconds) for each server date output to check if time is actually sync. I know there will be a second interval while logging in to the system via ssh and retrieving the time. But I am thinking of a margin like 3 - 5 seconds.

Is there any specific script to compare the output of date command and get the difference of seconds. I am thinking of creating a script to get the seconds via 'cut' command but it easily breaks if it reaches ":00" and the result will be inaccurate.

Thanks.

Last edited by Scott; 06-01-2013 at 03:50 AM.. Reason: Moved thread - Not an AIX issue
 

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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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