Measure-Object

Calculates the numeric properties of objects, and the characters, words, and lines in string objects, such asfiles of text.
Measure-Object [[-Property] [<String[]>]] [-Average] [-InputObject [<PSObject>]] [-Maximum] [-Minimum] [-Sum][<CommonParameters>]
Measure-Object [[-Property] [<String[]>]] [-Character] [-IgnoreWhiteSpace] [-InputObject [<PSObject>]] [-Line][-Word] [<CommonParameters>]

The Measure-Object cmdlet calculates the property values of certain types of object. Measure-Object performs three types of measurements, depending on the parameters in the command.

The Measure-Object cmdlet performs calculations on the property values of objects. It can count objects and calculate the minimum, maximum, sum, and average of the numeric values. For text objects, it can count and calculate the number of lines, words, and characters.

Parameters
-Average [<SwitchParameter>]

Indicates that the cmdlet displays the average value of the specified properties.

-Character [<SwitchParameter>]

Indicates that the cmdlet counts the number of characters in the input object.

-IgnoreWhiteSpace [<SwitchParameter>]

Indicates that the cmdlet ignores white space in word counts and character counts. By default, white space is not ignored.

-InputObject [<PSObject>]

Specifies the objects to be measured. Enter a variable that contains the objects, or type a command or expression that gets the objects.

When you use the InputObject parameter with Measure-Object, instead of piping command results to Measure-Object, the InputObject value-even if the value is a collection that is the result of a command, such as -InputObject (Get-Process)-is treated as a single object. Because InputObject cannot return individual properties from an array or collection of objects, it is recommended that if you use Measure-Object to measure a collection of objects for those objects that have specific values in defined properties, you use Measure-Object in the pipeline, as shown in the examples in this topic.

-Line [<SwitchParameter>]

Indicates that the cmdlet counts the number of lines in the input object.

-Maximum [<SwitchParameter>]

Indicates that the cmdlet displays the maximum value of the specified properties.

-Minimum [<SwitchParameter>]

Indicates that the cmdlet displays the minimum value of the specified properties.

-Property [<String[]>]

Specifies one or more numeric properties to measure. The default is the Count (Length) property of the object.

-Sum [<SwitchParameter>]

Indicates that the cmdlet displays the sum of the values of the specified properties.

-Word [<SwitchParameter>]

Indicates that the cmdlet counts the number of words in the input object.

<CommonParameters>

This cmdlet supports the common parameters: Verbose, Debug,ErrorAction, ErrorVariable, WarningAction, WarningVariable,OutBuffer, PipelineVariable, and OutVariable.

Inputs

System.Management.Automation.PSObject

You can pipe objects to Measure-Object.

Outputs

Microsoft.PowerShell.Commands.GenericMeasureInfo, Microsoft.PowerShell.Commands.TextMeasureInfo,

Microsoft.PowerShell.Commands.GenericObjectMeasureInfo If you use the Word parameter, Measure-Object returns a TextMeasureInfo object. Otherwise, it returns a GenericMeasureInfo object.

Examples
  1. Count the files and folders in a directory:
    PS C:> Get-ChildItem | Measure-Object
    

    This command counts the files and folders in the current directory.

  2. Measure the files in a directory:
    PS C:> Get-ChildItem | Measure-Object -Property length -Minimum -Maximum -Average
    

    This command displays the minimum, maximum, and sum of the sizes of all files in the current directory, and the average size of a file in the directory.

  3. Measure text in a text file:
    PS C:> Get-Content C:test.txt | Measure-Object -Character -Line -Word
    

    This command displays the number of characters, words, and lines in the Text.txt file.

  4. Measure computer processes:
    PS C:> Get-Process | Measure-Object -Property workingset -Minimum -Maximum -Average
    

    This command displays the minimum, maximum, and average sizes of the working sets of the processes on the computer.

  5. Measure the contents of a CSV file:
    PS C:> Import-Csv d:testserviceyrs.csv | Measure-Object -Property years -Minimum -Maximum -Average
    

    This command calculates the average years of service of the employees of a company.

    The ServiceYrs.csv file is a CSV file that contains the employee number and years of service of each employee. The first row in the table is a header row of EmpNo, Years.

    When you use Import-Csv to import the file, the result is a PSCustomObject with note properties of EmpNo and Years. You can use Measure-Object to calculate the values of these properties, just like any other property of an object.

  6. Measure Boolean values:
    PS C:> Get-ChildItem | Measure-Object -Property psiscontainer -Max -Sum -Min -Average
    Count    : 126
    Average  : 0.0634920634920635
    Sum      : 8
    Maximum  : 1
    Minimum  : 0
    Property : PSIsContainer
    

    This example demonstrates how the Measure-Object can measure Boolean values. In this case, it uses the PSIsContainer Boolean property to measure the incidence of folders (vs. files) in the current directory.

Related Links

Compare-Object
ForEach-Object
Group-Object
New-Object
Select-Object
Sort-Object
Tee-Object
Where-Object