Kirk Jackson Senior Developer, Xero Wellington.NET Users Group SVR308

Windows PowerShell:The Future of Server Administration  Kirk JacksonSenior Developer, XeroWellington .NET Users Group

SVR308

Session Level / Questions

About the Speaker

Kirk JacksonSenior Developer, Xerohttp://www.xero.com Wellington .NET User Group organiserhttp://www.dot.net.nz/wellingtonMicrosoft MVP, ASP.NETBloghttp://pageofwords.comkirk@pageofwords.com

Related Sessions

UNC308 - Microsoft Windows PowerShell Scripting for Microsoft Exchange Server 2007Johann KruseWed 15 Aug, 12:10-1:25pmSRV20 – Using PowerShell in Windows 2008Hands-on labAvailable throughout TechEdDEV311 - NET Framework 3.0 End-to-End: Putting the Pieces TogetherMatthew WinklerWed 15 Aug, 3:45-5:00pm

Agenda

What is Windows PowerShell?Getting StartedUsing PowerShellScriptingAlternate Data Sources

What is PowerShell?

What is PowerShell?

The best shell scripting

environment for Windows

What is PowerShell?

ObjectsConsistentDiscoverable

What is PowerShell?

New command line interface for WindowsScripting environment for WindowsNew programming language

Microsoft’s new platform for Server & Product administrationDesigned for the Windows environment

Admin: The Old Way

COM Componen

t

Command Line Tool

Admin ToolGraphical User

InterfaceWindows or Server Product Functionality

WMI Classes

Admin: The New Way

Scripts

Windows PowerShell CmdLets

MMC Admin ToolGraphical User Interface

Windows or Server Product Functionality

Microsoft .NET Framework

What uses PowerShell?

Exchange Server 2007Recipients, storage, transport, policy, serversUnderlies the GUI

System Center Operations ManagerSystem Center Data Protection Manager V2System Center Virtual Machine Manager

Install agents, explore objects, authoring, monitoring, alerts

Third parties: F5 Networks, Quest, ...Anything with WMI, COM, .NET interface

Exchange 2007

Exchange 2007Exchange Server 2003 (VBScript) E2K7 (PowerShell one-liner)

Mailbox Statistics

Set listExchange_Mailboxs = GetObject("winmgmts:{impersonationLevel=impersonate}!\\COMPUTERNAME\ROOT\MicrosoftExchangeV2").InstancesOf("Exchange_Mailbox")

For Each objExchange_Mailbox in listExchange_MailboxsWScript.echo "AssocContentCount =” + objExchange_Mailbox.AssocContentCountWScript.echo " DateDiscoveredAbsentInDS =” + objExchange_Mailbox.DateDiscoveredAbsentInDSWScript.echo " DeletedMessageSizeExtended =” + objExchange_Mailbox. DeletedMessageSizeExtendedWScript.echo " LastLoggedOnUserAccount =” + objExchange_Mailbox. LastLoggedOnUserAccountWScript.echo " LastLogoffTime =” + objExchange_Mailbox. LastLogoffTimeWScript.echo " LastLogonTime =” + objExchange_Mailbox. LastLogonTime WScript.echo " LegacyDN =” + objExchange_Mailbox. LegacyDNWScript.echo " MailboxDisplayName =” + objExchange_Mailbox. MailboxDisplayNameWScript.echo " MailboxGUID =” + objExchange_Mailbox. MailboxGUID WScript.echo " ServerName =” + objExchange_Mailbox. ServerName WScript.echo " Size =” + objExchange_Mailbox. SizeWScript.echo " StorageGroupName =” + objExchange_Mailbox. StorageGroupName WScript.echo " StorageLimitInfo =” + objExchange_Mailbox. StorageLimitInfo WScript.echo " StoreName =” + objExchange_Mailbox. StoreName WScript.echo " TotalItems =” + objExchange_Mailbox. TotalItems Next

get-mailboxstatistics –server $servername

Database Mgmt

Dim StorGroup as New CDOEXM.StorageGroup

StorGroup.DataSource.Open "LDAP://" + DCServer + "/ CN=First Storage Group,CN=InformationStore,CN=" + Server + ",CN=Servers,CN=First Administrative Group, CN=Administrative Groups,CN=First Organization, CN=Microsoft Exchange,CN=Services, CN=Configuration," + DomainName

StorGroup.MoveLogFiles("C:\newlogPath", 0)

move-storagegrouppath -identity “First Storage Group“ –log "C:\newlogPath”

Recipient Mgmt

Dim objMailbox As CDOEXM.IMailboxStore

Set objMailbox = GetObject("LDAP://" + DCServer + "CN=FOO,CN=users," + DomainName)

objMailbox.CreateMailbox "LDAP://" + DCServer + "/CN=Private MDB,CN=First Storage Group,CN=InformationStore,CN=" + Server + ",CN=Servers,CN=First Administrative Group, CN=Administrative Groups,CN=First Organization, CN=Microsoft Exchange,CN=Services, CN=Configuration," + DomainName

enable-mailbox -identity domain\FOO –database “First Storage Group\Private MDB”

>360 cmdlets are provided by the Exchange 2007 SnapIn http://technet.microsoft.com/en-us/library/bb124413.aspx

The Circle of AdminExplore at

the command line

Find the correct command

line(s) for the job

Parameterize in an

informal script

Formalize in a production

script

What’s wrong now?

What is wrong with cmd.exe?Weak languagePoor coverage / few utilitiesInsufficient / inflexible helpWindows is a GUI

What is wrong with bash / tcsh etc?Inconsistencies over the yearsText-orientedBasic scripting languages, poor library support

String versus Objects

$ ps -e | grep " p" | awk '{ print $1 }' | xargs kill

vsPS> get-process p* | stop-process

$ echo "this is a string" | tr '[a-z]' '[A-Z]' vsPS> "this is a string".ToUpper()

Getting Started

Getting Started

Pre-requisites:Windows Vista, Windows Server 2008,Windows XP SP2, Windows Server 2003.Net 2.0

Download from:http://www.microsoft.com/powershell

Join the communityNews GroupThe Blog http://blogs.msdn.com/powershell

Read the bundled documentation

Getting Started

No need to learn .NETExisting tools will all workNo need to learn the PowerShell languageLearn at your own paceTry using it instead of Command Prompt

Set-ExecutionPolicy

RestrictedAll-SignedRemote-SignedUnrestricted

help set-executionpolicy –detailed

Getting Started

demo

Using PowerShell

Top 4 Commands

1. Get-Command2. Get-Member3. Get-Help and -?4. Get-PSDrive

Types of Commands

cmdletsShell function commandsScript commandsNative windows commands

command -parameter arg1 arg2write-output -inputobject “hello”

cmdlets

129 provided cmdlets, you can add more> 360 cmdlets in Exchange 2007 SnapIncmdlets can be built using C#, VB.NETAlways named Verb-Noune.g. get-content, get-childitem,sort-object, select-object, where-objectcmdlets declare their parameters, the runtime parses them in a consistent waycmdlets can receive input from the pipeline

Shell functions

A piece of script code that has a nameLives in memory, temporarilyCan have parameters, or just work on all argumentsCan be entered interactively, or ‘dot-sourced’ ( . ./myfunc.ps1 )Can receive input from the pipeline

Script command

PowerShell code written to a .ps1 fileLoaded from disk each time they are runOtherwise, the same as shell functions

Native Windows Commands

Non-PowerShell / legacy commandsDon’t use PowerShell naming standards, parameter parsingOnly receive command line argumentsIf used in a pipeline, input is bundled up and sent as a string, output received as a stringRuns in a seperate process

Everything is an object

object = data + functionalityObjects have properties, which contain the data for that object (e.g. Name, Length)Objects have methods, which define the functionality of that object (e.g. Delete, MoveTo)Examples:

“a string” (String)42 (Integer)

Not your Fathers Pipeline

> first | second | third | fourth

PipelineCommand

… … …

> first | second | third | fourth | out-default

PowerShell Pipeline

No text, real objects are passed from one step to the nextFirst cmdlet generatesSubsequent cmdlets filter, sort, group, compare, ...Streaming means objects are passed along the pipeline when they are generatedAll commands run in-process (except native Windows commands)

Typing Tips

Aliases are defined for many cmdletscd instead of set-locationdir / ls instead of get-childitem

Parameters:Positional parameters don’t need their nameType as little of the parameter name as possible

When writing for other people, be sure to use expanded names

Using PowerShell

demo

Top 4 Commands

1. Get-Command2. Get-Member3. Get-Help and -?4. Get-PSDrive

Finding Commands

> Get-Command i*> Get-Command –Noun Process> Get-Command –Type {Alias | Function | Filter | Cmdlet | ExternalScript | Application | Script | All }

Inspecting Objects

List all the properties and methods of an object> dir | get-member> dir | select Name | get-member

Help

Man-page style help on language and commands

> Help> Help <command>

> <command> -?

> Help About_While> Get-Help * |Where {$_.Synopsis -match "process"}

PowerShell Drive Providers

Expose alternate data sources as ‘drives’ for you to traverse> cd FUNCTION:> cd ENV:> ls

Trusting Operations

Commands with side-effects support:Whatif

get-process | where {$_.handles –ge 500} | stop-process –WhatIf

Confirmstop-process S* -Confirm

Verbosestop-Process [a-x]*[q]*[r-t] -Verbose

Common Parameters

WhatIf ConfirmVerboseDebugErrorAction ErrorVariable OutVariableOutBuffer

Using PowerShell

demo

Scripting

Language Keywords

Only 13 keywords to learn:if (else, elseif)switch (default)forbreakdo, while, untilfunction, filterforeach

Language Constructs

Maths: + - * / % as normalAssignment: =, +=, -=, *=, /=, %=Boolean: -eq, -ne, -lt, -gt, -le, -ge, –and

–or, etc…Strings: -match, -notmatch, -like, -notlikeEscape: backticks `n, `t, `r etcLine continuation: backtick `Null value: $nullBoolean: $true / $false

Variables

Variables in PowerShell are created when they are first assignedUnassigned variables act as if they contain $null$_ contains ‘current object’ (match, pipeline value, loop value)$args contains unbound arguments to a functionThe type of the variable determines what happens when you add, mult, etc.

Language Constructs

$variable – a named variable$hash = @{ } – empty hash$hash[“key”] = $value$script = { … } – store a script&$script – run the script stored in $scriptArrays are wrapped and unwrapped transparently (usually a good thing)Convention: cmdlets are named verb-noun (e.g. get-content)Convention: singular, not plural

Scripting

demo

Creating a Function

$number = 7

$square = $number * $number

Creating a Function

$number = 7

function square {$args[0] * $args[0]

}

square $number

Creating a Function

$number = 7function square ( [int]$number = 1 ){

$number * $number}square $number

Creating a Function

function Get-Total ([String]$property = $(throw "Property Required"),[string]$formatString = "Total {1} = {0}") { Begin { $total = 0 } Process { $total += $_.$property } End { $formatString -f $total,$property }}

Scripting

demo

Alternate Data Sources

PSDrives

Data stores surfaced as “Drives”Filesystem, Registry, Alias, Certs, Env, Functions, Variables, etc.> Get-PSDrive> dir HKLM:\SOFTWARE\Microsoft

Each drive provider exposes PSDrivesItem, ChildItem, Content, ItemProperty, ACL, etc.

PSDrives

SharePoint drive provider:http://www.codeplex.com/PSSharePoint

Users, roles, websActive Directory Provider:http://www.codeplex.com/PowerShellCX/ SQL drive provider:http://tinyurl.com/2ycb66Zip drive provider:http://tinyurl.com/23j9cpNone of these are ready for primetime

WMI

Windows Management InstrumentationMonitor and control system components

Locally and remotelyPowerShell allows access to WMI classes and wraps in PowerShell objects

Get-WmiObject Win32_LogicalDiskGet-WmiObject Win32_ServiceGet-WmiObject win32_share

COM

Component Object ModelCOM and .NET talk nicely

PowerShell leverages this abilityUse new-object –comobject to createPowerShell wraps in an object

$ie = new-object -comobject InternetExplorer.Application

$ie.Navigate("www.google.com")

XML

XML can be loaded into PowerShell quite nicelyViewing the XML is as simple as traversing a tree of objectsModifying XML is not so pretty, and requires an understanding of .NET XML processing

Cool Tools

PowerShell gadgethttp://andrewpeters.net/powershell-gadget/Windows PowerShell graphical help filehttp://www.microsoft.com/downloads/details.aspx?familyid=3b3f7ce4-43ea-4a21-90cc-966a7fc6c6e8Codeplex - powershell community extensionshttp://www.codeplex.com/PowerShellCX/

Resources

Resources

Windows PowerShell Team blog: http://blogs.msdn.com/PowerShellWindows PowerShell ScriptCenter http://www.microsoft.com/technet/scriptcenter/hubs/msh.mspxhttp://www.codeplex.com/ShinyPower

What is PowerShell?

New command line interface for WindowsScripting environment for WindowsNew programming language

Microsoft’s new platform for Server & Product administrationDesigned for the Windows environment

Related Sessions

UNC308 - Microsoft Windows PowerShell Scripting for Microsoft Exchange Server 2007Johann KruseWed 15 Aug, 12:10-1:25pmSRV20 – Using PowerShell in Windows 2008Hands-on labAvailable throughout TechEdDEV311 - NET Framework 3.0 End-to-End: Putting the Pieces TogetherMatthew WinklerWed 15 Aug, 3:45-5:00pm

Evaluation Forms

Questions?

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