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Full Discussion: ksh to check second time difference between two servers
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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LEARN ABOUT CENTOS

iso8601

PACEMAKER(8)						  System Administration Utilities					      PACEMAKER(8)

NAME

       Pacemaker - Part of the Pacemaker cluster resource manager

SYNOPSIS

       iso8601 command [output modifier]

DESCRIPTION

       iso8601 - Display and parse ISO8601 dates and times

OPTIONS

       -?, --help
	      This text

       -$, --version
	      Version information

       -V, --verbose
	      Increase debug output

   Commands:
       -n, --now
	      Display the current date/time

       -d, --date=value
	      Parse an ISO8601 date/time.  Eg. '2005-01-20 00:30:00 +01:00' or '2005-040'

       -p, --period=value
	      Parse an ISO8601 date/time with interval/period (wth start time).  Eg. '2005-040/2005-043'

       -D, --duration=value
	      Parse an ISO8601 date/time with duration (wth start time). Eg. '2005-040/P1M'

       -E, --expected=value
	      Parse an ISO8601 date/time with duration (wth start time). Eg. '2005-040/P1M'

   Output Modifiers:
       -s, --seconds
	      Show result as a seconds since 0000-001 00:00:00Z

       -S, --epoch
	      Show result as a seconds since EPOCH (1970-001 00:00:00Z)

       -L, --local
	      Show result as a 'local' date/time

       -O, --ordinal
	      Show result as an 'ordinal' date/time

       -W, --week
	      Show result as an 'calendar week' date/time

       For more information on the ISO8601 standard, see: http://en.wikipedia.org/wiki/ISO_8601

AUTHOR

       Written by Andrew Beekhof

REPORTING BUGS

       Report bugs to pacemaker@oss.clusterlabs.org

Pacemaker 1.1.10-29.el7 					     June 2014							      PACEMAKER(8)
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