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Date setdate yesterday3/18/2023 ![]() You can use the -Split operator to pull out just the date, which is what you want for the file name. Additionally, after performing the replacement, you end up with an (unneeded) time value. You use the -Replace operator to replace the “/” character with a “-“. This manipulation is needed because Get-Date returns a string that contains the “/” character New-Item views as a path character. ![]() In that last example, you need to do a bit of manipulation of the date/time returned by Get-Date in order to get a filename that Windows accepts. PS C:> New-Item -Path C:Results -Name $YesterdayFN -ItemType File PS C:> $YesterdayFN = "Results for $YesterdayDate.Txt" PS C:> $YesterdayDate = ($Yesterday -split ' ') PS C:> # Creating a file with today's date PS C:> Get-ADUser -Filter * -Property LastLogonDate | Where-Object LastlogonDate -gt $YesterdayĭistinguishedName : CN=Administrator,CN=Users,DC=cookham,DC=net PS C:> # Getting users who have logged on in the past day a- 14:20 11041 GratefulDead Show List.txt PS C:> Get-ChildItem | Where-Object LastAccessTime -gt $Yesterday ![]() Here are some examples: PS C:> # Finding files newer than yesterday Creating a file name for a file representing last weeks information.Determining which AD Users have not logged on in the last week.Identifying files that are older/younger than a day/month/etc ago. ![]() There are a variety use cases for getting a date in the past (or the future), including: NET returns a new object with updated property values. This means you can not change property values after you create the object. It is worth noting that a System.DateTime object is immutable. PS C:> $Yesterday = (Get-Date).AddDays(-1) Then you use the AddDays() method to add/subtract some number of days, like this: PS C:> # Get today's Date To get yesterday’s date (or tomorrow’s) you create a date and time object for today using Get-Date with no parameters. The object has a type of System.DateTime which contains a number of methods allowing you to add increments of time – a month, a day, etc to the object. So how do you get yesterday’s date – or the date or last month or last year? The trick here is to use the object returned from Get-Date. So as you can see, you can use Get-Date to return a specific date/time. You can see the other features of Get-Date to help get the date in the exact format you need, see the Get-Date help information. PS C:> Get-Date -Month 8 -Day 1 -Year 1942 -Hour 0 -Minute 0 -Second 0 # Using the -Month, Day, Year to be specific and avoid parsing ![]() There are several parameters you can specify that allow you to create an object for a particular date, like this: PS C:> # Using the -Date Parameter and a date string If you run Get-Date and specify no parameters, the cmdlet returns the current date and time. This means you can create an object with just a date or just a time, or both, which gives you huge flexibility in handling dates and times. A date and time object contains both a date and a time. See the System.DateTime documentation for more details on this structure. NET structure provides a rich set of properties and methods to help you manipulate the date/time object. you could do this: PS C:> # Get the current dateĪs mentioned, the Get-Date cmdlet returns an object whose type is System.DateTime. Using the Get-Date cmdlet, you can get any date and time, and either display it or store it in a variable. As you probably know, PowerShell contains the Get-Date cmdlet. Let’s start by looking at how you can deal with dates and times. NET Then we can look at how to calculate yesterday and use that in your scripts. NET Time/Date methods.įirst, let’s look at dates in PowerShell and. A: You can use a combination of the Get-Date cmdlet and. ![]()
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