Convert String to Date

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This topic contains 2 replies, has 3 voices, and was last updated by Profile photo of Richard Siddaway Richard Siddaway 3 months, 2 weeks ago.

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  • #42376
    Profile photo of Manish Cornelius
    Manish Cornelius
    Participant

    Hi powershell gurus,

    I am getting the data in the following format :

    CLASS COUNT DESCRIPTION INITIAL_UPDATE LAST_UPDATE SEVERITY
    —– —– ———– ————– ———– ——–
    Maintenance 1 IML Cleared (System Administrator) 07/02/2013 00:19 07/02/2013 00:19 Informational
    Power 1 System Power Supply: General Failure (Power Supply 1) 09/05/2015 03:17 09/05/2015 21:20 Repaired
    Power 1 System Power Supplies Not Redundant 09/05/2015 03:17 09/05/2015 21:20 Repaired
    Power 1 System Power Supply: General Failure (Power Supply 2) 11/07/2015 03:39 11/07/2015 21:32 Repaired
    Power 1 System Power Supplies Not Redundant 11/07/2015 03:39 11/07/2015 21:32 Repaired

    Requirement is to have events picked only in the last 24hours from INITIAL_UPDATE. Any assistance is much appreciated.

    #42383
    Profile photo of Curtis Smith
    Curtis Smith
    Participant

    Hi Manish,
    Can you provide some more detail on this data? How are you getting it? Is it read from a text file? Is it generated by another command? It is data a collection of objects or an array of strings? I could make some assumptions based on how the data looks, but it would be just that, assumptions. If it's an object, then it is very possible that the property is already in datetime. If it's a string, you may be able to convert it to day time by simply type casting the string as datatime

    IE.

    [datetime]'7/14/1979 11:24:23'
    

    then you can use a timespan to check how old the stamp is

    New-TimeSpan -start ([datetime]'7/14/1979 11:24:23') -End (Get-Date)
    
    #Results
    @'
    Days              : 13479
    Hours             : 11
    Minutes           : 56
    Seconds           : 50
    Milliseconds      : 81
    Ticks             : 11646286100815366
    TotalDays         : 13479.4978018696
    TotalHours        : 323507.947244871
    TotalMinutes      : 19410476.8346923
    TotalSeconds      : 1164628610.08154
    TotalMilliseconds : 1164628610081.54
    '@
    

    You can then use the timespan with an if statement to check if it's within your desired range.

    #42397

    One slight problem.

    The string has to be in US format – MM/DD/YYYY – if you use that approach.

    US format
    PS> [datetime]'12/25/2016'

    25 December 2016 00:00:00

    UK format
    PS> [datetime]'25/12/2016'
    Cannot convert value "25/12/2016" to type "System.DateTime". Error: "String was not recognized as a
    valid DateTime."
    At line:1 char:1
    + [datetime]'25/12/2016'
    + ~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : InvalidArgument: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvalidCastParseTargetInvocationWithFormatProvider

    Converting a string to a DateTime object can be easy (if in US format) or a lot of work if in another format

    What date format are you using?

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