Select-Before
SYNOPSIS
Select objects before a given datetime.
SYNTAX
Select-Before -InputObject <PSObject> [-Before] <DateTime> [-Property <String>] [<CommonParameters>]
DESCRIPTION
Select-Before is a simplified version of Select-Object. The premise is that you can pipe a collection of objects to this command and select objects before a given datetime, based on a property, like LastWriteTime, which is the default.
EXAMPLES
Example 1
PS C:\> Get-Childitem c:\work -file | Select-Before "11/1/2020"
Directory: C:\work
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a--- 10/10/2020 2:09 PM 8862 Book1.xlsx
-a--- 10/30/2020 10:48 AM 0 dummy.dat
-a--- 10/13/2020 9:35 AM 447743 key1013.pdf
-a--- 10/6/2020 4:03 PM 2986 labsummary.format.ps1xml
-a--- 10/11/2020 12:33 PM 1678 prun.format.ps1xml
-a--- 10/10/2020 6:49 PM 1511 w.format.ps1xml
Select all objects that have been modified before 11/1/2020. This example is using the default -Property value of LastWriteTime.
Example 2
PS C:\> Get-Process | before (Get-Date).AddMinutes(-10) -Property StartTime
NPM(K) PM(M) WS(M) CPU(s) Id SI ProcessName
------ ----- ----- ------ -- -- -----------
33 30.21 46.19 0.81 9952 2 ApplicationFrameHost
75 102.42 126.08 4.89 16048 2 Box
23 25.27 33.83 0.33 5320 0 Box.Desktop.UpdateService
30 46.92 60.98 0.91 17384 2 BoxUI
31 39.82 4.34 0.56 26992 2 Calculator
...
Get all processes where the StartTime property value is before the last 10 minutes. This example is using the "before" alias.
PARAMETERS
-Before
Enter the cutoff date.
Type: System.DateTime
Parameter Sets: (All)
Aliases:
Required: True
Position: 0
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-InputObject
A piped in object.
Type: System.Management.Automation.PSObject
Parameter Sets: (All)
Aliases:
Required: True
Position: Named
Default value: None
Accept pipeline input: True (ByValue)
Accept wildcard characters: False
-Property
Enter the property name to use for the datetime sort. It needs to be a datetime object.
Type: System.String
Parameter Sets: (All)
Aliases:
Required: False
Position: Named
Default value: LastWritetime
Accept pipeline input: False
Accept wildcard characters: False
CommonParameters
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.
INPUTS
System.Management.Automation.PSObject
OUTPUTS
System.Object
NOTES
Learn more about PowerShell: http://jdhitsolutions.com/blog/essential-powershell-resources/