Using conditional logic on timestamp

Question

I'm writing a script that will compare times between 2 servers, and compare the time difference. The returned timestamp is in the format below:

-00:00:01.9989999
-01:00:02 
-00:00:00.9989999

I need to create a condition where the action would be triggered, only if the difference is greater then 3 minutes. How should I format this?

Unless you can guarantee both of the time stamps being compared are on the same day, you're going to need a date component to go along with the time stamps to get accurate results. — mjolinor
– mjolinor, Commented Jun 3, 2015 at 15:19
([timespan]'-00:00:00.9989999').Duration() -gt (New-TimeSpan -Minutes 3) — user4003407
– user4003407, Commented Jun 3, 2015 at 15:29
@mjolinor I'm converting the datetime objects to UTC first, and all are within the same physical boundary (US), so I would be very shocked if there was a difference in date. — WR7500
– WR7500, Commented Jun 3, 2015 at 15:51

Ansgar Wiechers · Accepted Answer · 2015-06-03 17:15:44Z

1

As @PetSerAl suggested, cast the times to timespans, get the Duration() of their difference (the absolute value of the difference, if you will), and compare it to a timespan of 3 minutes:

$t1 = [timespan]'-00:00:01.9989999'
$t2 = [timespan]'-00:00:00.9989999'

$delta = ($t1 - $t2).Duration()

if ($delta -gt [timespan]'00:03:00') {
  # do stuff
}

answered Jun 3, 2015 at 17:15

Ansgar Wiechers

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