Understanding Get-Member

This topic contains 5 replies, has 3 voices, and was last updated by Profile photo of Sebastian Reitter Sebastian Reitter 1 year, 8 months ago.

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  • #23710
    Profile photo of Graham Beer
    Graham Beer
    Participant

    Hi, as you know i'm in my training to learn powershell.

    I'm struggling to get my head round the results of a get-member.

    So for the below example of Get-Process | gm (sorry to paste it all). How do you use the methods and property's in a command ? how do you use them ? for example, GetType Method type GetType(), how is this used and how does it help ?

    Thank you 🙂

    TypeName: System.Diagnostics.Process

    Name MemberType Definition
    —- ———- ———-
    Handles AliasProperty Handles = Handlecount
    Name AliasProperty Name = ProcessName
    NPM AliasProperty NPM = NonpagedSystemMemorySize
    PM AliasProperty PM = PagedMemorySize
    VM AliasProperty VM = VirtualMemorySize
    WS AliasProperty WS = WorkingSet
    Disposed Event System.EventHandler Disposed(System.Object, System.EventArgs)
    ErrorDataReceived Event System.Diagnostics.DataReceivedEventHandler ErrorDataReceived(System.Object, System.Diagnostics.DataRece...
    Exited Event System.EventHandler Exited(System.Object, System.EventArgs)
    OutputDataReceived Event System.Diagnostics.DataReceivedEventHandler OutputDataReceived(System.Object, System.Diagnostics.DataRec...
    BeginErrorReadLine Method void BeginErrorReadLine()
    BeginOutputReadLine Method void BeginOutputReadLine()
    CancelErrorRead Method void CancelErrorRead()
    CancelOutputRead Method void CancelOutputRead()
    Close Method void Close()
    CloseMainWindow Method bool CloseMainWindow()
    CreateObjRef Method System.Runtime.Remoting.ObjRef CreateObjRef(type requestedType)
    Dispose Method void Dispose(), void IDisposable.Dispose()
    Equals Method bool Equals(System.Object obj)
    GetHashCode Method int GetHashCode()
    GetLifetimeService Method System.Object GetLifetimeService()
    GetType Method type GetType()
    InitializeLifetimeService Method System.Object InitializeLifetimeService()
    Kill Method void Kill()
    Refresh Method void Refresh()
    Start Method bool Start()
    ToString Method string ToString()
    WaitForExit Method bool WaitForExit(int milliseconds), void WaitForExit()
    WaitForInputIdle Method bool WaitForInputIdle(int milliseconds), bool WaitForInputIdle()
    __NounName NoteProperty System.String __NounName=Process
    BasePriority Property int BasePriority {get;}
    Container Property System.ComponentModel.IContainer Container {get;}
    EnableRaisingEvents Property bool EnableRaisingEvents {get;set;}
    ExitCode Property int ExitCode {get;}
    ExitTime Property datetime ExitTime {get;}
    Handle Property System.IntPtr Handle {get;}
    HandleCount Property int HandleCount {get;}
    HasExited Property bool HasExited {get;}
    Id Property int Id {get;}
    MachineName Property string MachineName {get;}
    MainModule Property System.Diagnostics.ProcessModule MainModule {get;}
    MainWindowHandle Property System.IntPtr MainWindowHandle {get;}
    MainWindowTitle Property string MainWindowTitle {get;}
    MaxWorkingSet Property System.IntPtr MaxWorkingSet {get;set;}
    MinWorkingSet Property System.IntPtr MinWorkingSet {get;set;}
    Modules Property System.Diagnostics.ProcessModuleCollection Modules {get;}
    NonpagedSystemMemorySize Property int NonpagedSystemMemorySize {get;}
    NonpagedSystemMemorySize64 Property long NonpagedSystemMemorySize64 {get;}
    PagedMemorySize Property int PagedMemorySize {get;}
    PagedMemorySize64 Property long PagedMemorySize64 {get;}
    PagedSystemMemorySize Property int PagedSystemMemorySize {get;}
    PagedSystemMemorySize64 Property long PagedSystemMemorySize64 {get;}
    PeakPagedMemorySize Property int PeakPagedMemorySize {get;}
    PeakPagedMemorySize64 Property long PeakPagedMemorySize64 {get;}
    PeakVirtualMemorySize Property int PeakVirtualMemorySize {get;}
    PeakVirtualMemorySize64 Property long PeakVirtualMemorySize64 {get;}
    PeakWorkingSet Property int PeakWorkingSet {get;}
    PeakWorkingSet64 Property long PeakWorkingSet64 {get;}
    PriorityBoostEnabled Property bool PriorityBoostEnabled {get;set;}
    PriorityClass Property System.Diagnostics.ProcessPriorityClass PriorityClass {get;set;}
    PrivateMemorySize Property int PrivateMemorySize {get;}
    PrivateMemorySize64 Property long PrivateMemorySize64 {get;}
    PrivilegedProcessorTime Property timespan PrivilegedProcessorTime {get;}
    ProcessName Property string ProcessName {get;}
    ProcessorAffinity Property System.IntPtr ProcessorAffinity {get;set;}
    Responding Property bool Responding {get;}
    SessionId Property int SessionId {get;}
    Site Property System.ComponentModel.ISite Site {get;set;}
    StandardError Property System.IO.StreamReader StandardError {get;}
    StandardInput Property System.IO.StreamWriter StandardInput {get;}
    StandardOutput Property System.IO.StreamReader StandardOutput {get;}
    StartInfo Property System.Diagnostics.ProcessStartInfo StartInfo {get;set;}
    StartTime Property datetime StartTime {get;}
    SynchronizingObject Property System.ComponentModel.ISynchronizeInvoke SynchronizingObject {get;set;}
    Threads Property System.Diagnostics.ProcessThreadCollection Threads {get;}
    TotalProcessorTime Property timespan TotalProcessorTime {get;}
    UserProcessorTime Property timespan UserProcessorTime {get;}
    VirtualMemorySize Property int VirtualMemorySize {get;}
    VirtualMemorySize64 Property long VirtualMemorySize64 {get;}
    WorkingSet Property int WorkingSet {get;}
    WorkingSet64 Property long WorkingSet64 {get;}
    PSConfiguration PropertySet PSConfiguration {Name, Id, PriorityClass, FileVersion}
    PSResources PropertySet PSResources {Name, Id, Handlecount, WorkingSet, NonPagedMemorySize, PagedMemorySize, PrivateMemorySize, ...
    Company ScriptProperty System.Object Company {get=$this.Mainmodule.FileVersionInfo.CompanyName;}
    CPU ScriptProperty System.Object CPU {get=$this.TotalProcessorTime.TotalSeconds;}
    Description ScriptProperty System.Object Description {get=$this.Mainmodule.FileVersionInfo.FileDescription;}
    FileVersion ScriptProperty System.Object FileVersion {get=$this.Mainmodule.FileVersionInfo.FileVersion;}
    Path ScriptProperty System.Object Path {get=$this.Mainmodule.FileName;}
    Product ScriptProperty System.Object Product {get=$this.Mainmodule.FileVersionInfo.ProductName;}
    ProductVersion ScriptProperty System.Object ProductVersion {get=$this.Mainmodule.FileVersionInfo.ProductVersion;}

  • #23712
    Profile photo of Sebastian Reitter
    Sebastian Reitter
    Participant

    Hi,

    the most easy way to Access Methods of an Object is to first save it to a variable:

    $Variable1 = get-process -Name Notepad.exe 

    than you can Access the Objects members like this:

    $Variable1.gettype()

    Same works for Properties:

    $Variable1.fileversion

    How to use the Methods? Thats where you have to search for yourself... each method has its own "Parameters" and stuff. You have to look for documentation in the net.

    greetings.

  • #23713
    Profile photo of Graham Beer
    Graham Beer
    Participant

    OK, thank you Seb.

  • #23714
    Profile photo of Albert van Boerum
    Albert van Boerum
    Participant

    Hello Graham,

    You can find a really good explanation about this subject on Microsoft virtual academy.
    http://www.microsoftvirtualacademy.com/training-courses/getting-started-with-powershell-3-0-jump-start

    This helped me a lot trying to learn powershell.

  • #23716
    Profile photo of Graham Beer
    Graham Beer
    Participant

    From the PowerShell in Depth book i found this, which is useful and help for porperty's:

    "Remember that you can use any property name you see from Get-Member in
    cmdlets like Where-Object and Select-Object. Don't assume a command's default output
    is all there is to the object or that those are the actual property names."

    So how does Methods work ? So many in the list make no sense !

  • #23717
    Profile photo of Sebastian Reitter
    Sebastian Reitter
    Participant

    The Object-type "Process" has several Methods. What each of them does is documented (somehow) in the MSDN-Library

    Powershell is Object-Oriented. Which means you always get .Net-Objects back from what you type in in PS.
    The Process Class with all ist Methods is documented here:

    [url]https://msdn.microsoft.com/de-de/library/system.diagnostics.process%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396 [/url]

    i.e. the Method "Kill" is Documented here:
    [url]https://msdn.microsoft.com/de-de/library/system.diagnostics.process.kill[v=vs.110].aspx[/url]

    And there it says:

    [blockquote]Immediately stops the associated process. [/blockquote]

    So you will have to look yourself, what they all do and how to use them.

    But for a start, it may be Sufficiant for you, to get to know the Powershell-CMDlets better. They are less complicated than .Net-Methods, and will do the most of what you want to do.
    instead of using the method "kill", you would rather use the "Stop-Process" commandlet.

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