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I am trying to get the output of a powershell command into an array, but it seems not to work. In fact I want to address the output with a row and a column index. e.g.
$a=Get-Service
With output (part)
Status Name DisplayName
------ ---- -----------
Stopped AeLookupSvc Application Experience
Stopped ALG Application Layer Gateway Service
Stopped AppIDSvc Application Identity
Running Appinfo Application Information
Stopped AppMgmt Application Management
I want to address for the second line the DisplayName, e.g.
$a[2][2]
And it should give then
Application Layer Gateway Service
But this does not seem to work.
Can anybody help?
429
PowerShell Converts String to Array using ToCharArray() Using the ToCharArray() method of String object, you can convert the string to an array of characters. In the above PowerShell script, the $testString variable contains the string value. We have used ToCharaArray() string method to convert a string to an array.
To send a PowerShell command's output to the Out-File cmdlet, use the pipeline. Alternatively, you can store data in a variable and use the InputObject parameter to pass data to the Out-File cmdlet. Out-File saves data to a file but it does not produce any output objects to the pipeline.
The echo command is used to print the variables or strings on the console. The echo command has an alias named “Write-Output” in Windows PowerShell Scripting language. In PowerShell, you can use “echo” and “Write-Output,” which will provide the same output.
To create and initialize an array, assign multiple values to a variable. The values stored in the array are delimited with a comma and separated from the variable name by the assignment operator ( = ). The comma can also be used to initialize a single item array by placing the comma before the single item.
This type of question makes me think that you're probably coming from a Unix background, and are accustomed to having to deal with indicies and column index, that sort of thing.
Fundamentally, PowerShell is an object-oriented scripting language. You simply don't need to do what you're asking about here.
For instance, if you want to capture the results, then grab a property for one of the objects, here's how that's done.
First, capture the output.
$a=Get-Service
Now, you want a particular property of a particular entity. To get that, index into the object you want.
>$a[2]
Status Name DisplayName
------ ---- -----------
Stopped AJRouter AllJoyn Router Service
To select the .DisplayName, all you have to do is append that to the end of your previous command.
> $a[2].DisplayName
AllJoyn Router Service
If you want to select multiple values, you could use this approach instead.
#Select multiple values from one entity
$a[2] | select DisplayName, Status
>DisplayName Status
----------- ------
Application Layer Gateway Service Stopped
#Select multiple values from each in the array
$a | select DisplayName, Status
>DisplayName Status
----------- ------
Adobe Acrobat Update Service Running
AllJoyn Router Service Stopped
Application Layer Gateway Service Stopped
Application Identity Stopped
This is not possible without a mapping from property names to array indices. Note that what you see in the output is just a partial list of properties (defined in an XML file somewhere). So there isn't even an easy way to convert those to array indices.
However, I also don't quite understand your need here. You can get the second service with $a[1], as expected. And then you can get its DisplayName property value with $a[1].DisplayName. PowerShell uses objects throughout. There is simply no need to fall back to text parsing or cryptic column indices just to get your data. There's an easier way.
22
The output from Get-Service that you see in the Console may look like an array (as it is formatted as a table when sent to the Console), but it is actually an 'System.ServiceProcess.ServiceController' object.
Rather than using row and column designations, you need to use the name of the property to retrieve it, so for your example:
$a[2].DisplayName will return Application Layer Gateway Service
4
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