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![Creating Functions
function Get-OS
{
param(
[string[]]$ComputerName = $env:COMPUTERNAME
)
gwmi Win32_OperatingSystem -ComputerName $ComputerName
}
PS C:> Get-OS -ComputerName “MyClient1”, ”MyClient2”](https://image.slidesharecdn.com/03itproroom9thepowerofpowershellkurtroggen85-130313120816-phpapp01/85/The-Power-of-PowerShell-Advanced-12-320.jpg)
![Comment Based Help
Function Get-OS
{
<#
.SYNOPSIS
<toktok>
.DESCRIPTION
<toktok>
.PARAMETER ComputerName
<toktok>
.EXAMPLE
Get-OS
.LINK
http://mysite.com/get-os/
#>
Param (
[string]$ComputerName,
[switch]$Details
)
}](https://image.slidesharecdn.com/03itproroom9thepowerofpowershellkurtroggen85-130313120816-phpapp01/85/The-Power-of-PowerShell-Advanced-15-320.jpg)
![Accepting Pipeline Input
function Get-OS
{
param(
[Parameter(ValueFromPipeLine=$true)]
[string[]]$ComputerName = $env:COMPUTERNAME
)
PROCESS
{
<blabla>
}
}](https://image.slidesharecdn.com/03itproroom9thepowerofpowershellkurtroggen85-130313120816-phpapp01/85/The-Power-of-PowerShell-Advanced-17-320.jpg)
Uploaded byMicrosoft TechNet - Belgium and Luxembourg
The Power of PowerShell: Advanced
This document discusses advanced PowerShell concepts including functions, modules, comment-based help, accepting pipeline input, and creating PowerShell objects. It highlights three important cmdlets for discovery (Get-Help, Get-Command, Get-Member) and how to create reusable functions and modules with functions. It also covers how to accept pipeline input into functions and create PowerShell objects to output from functions.
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The Power of PowerShell: Advanced
- 1. The Power OfPowerShell: Advanced Kurt Roggen, Technical Consultant, Devoteam kurt.roggen@devoteam.be
- 2. Agenda • PowerShellBasics • PS Syntax • Pipeline • 3 cmdlets to know/remember • PowerShell Advanced • Functions • Modules • Comment Based Help • Accepting PS Objects from the pipeline • Creating PS Objects
- 4. PS Cmdlet Syntax verb-<ID>SingularNoun Get-Service, New-Mailbox, Get-ADUser, Get-Disk, Get-VM, Start-Process, Stop-Process, New-NALun, Get-AzureVM, ...
- 5. 3 cmdlets toknow/remember!! PowerShell is self-discoverable using 1. Get-Command 2. Get-Help 3. Get-Member
- 6. 1. Get-Help Displayshelp information Get-Help Get-Help get-service Get-Help get-service -examples Get-Help get-service -detailed Get-Help get-service -full Get-Help get-service -online Get-Help get-service -parameter ComputerName Get-Help * -parameter ComputerName Get-Help about_wildcards Alias: help
- 7. 2. Get-Command Displays allcommands (cmdlet, function, alias) Get-Command Get-Command -verb get Get-Command -noun service Get-Command -module ActiveDirectory Get-Command -CmdType cmdlet Alias: gcm
- 8. 3. Get-Member Displays allMemberTypes (Property,Methods,...) Get-Service | Get-Member Get-Member –InputType (Get-Service) Get-Member –MemberType Method Get-Member –MemberType Property Alias: gm
- 9.
- 10. Modules Collections of cmdlets Portable Storedin file system %windir%System32WindowsPoweshell1.0Modules Module Cmdlets: New-Module, Get-Module, Import-Module, Remove-Module Module Manifest Cmdlets: New-ModuleManifest , Test-ModuleManifest
- 11.
- 12. Creating Functions functionGet-OS { param( [string[]]$ComputerName = $env:COMPUTERNAME ) gwmi Win32_OperatingSystem -ComputerName $ComputerName } PS C:> Get-OS -ComputerName “MyClient1”, ”MyClient2”
- 13. Creating Modules Modules Location: %windir%System32WindowsPoweshell1.0Modules Createa PS module folder (eg: MyModule) Save PS module with extension .PSM1 instead of .PS1 (MyModule.psm1) • PS module folder name must have same name as PS module file basename
- 14.
- 15. Comment Based Help Function Get-OS { <# .SYNOPSIS <toktok> .DESCRIPTION <toktok> .PARAMETER ComputerName <toktok> .EXAMPLE Get-OS .LINK http://mysite.com/get-os/ #> Param ( [string]$ComputerName, [switch]$Details ) }
- 16.
- 17. Accepting Pipeline Input function Get-OS { param( [Parameter(ValueFromPipeLine=$true)] [string[]]$ComputerName = $env:COMPUTERNAME ) PROCESS { <blabla> } }
- 18.
- 19. Create PS Object $Obj= New-Object –Type PSObject $Obj | Add-Member –Name ComputerName –Value $ComputerName –Type NoteProperty $Obj | Add-Member –Name OS –Value $OS –Type NoteProperty $Obj | Add-Member –Name ServicePack –Value $ServicePack –Type NoteProperty $Obj | Add-Member –Name Version –Value $ComputerName –Type NoteProperty Return PS Object (to pipeline) $Obj
- 20. Conclusion PowerShell is thefuture present PowerShell is Self-discoverable Remember 3 basic commands Reuse code using functions in modules It’s easy - Try it, you’ll see!
Editor's Notes
- #7 Check out about_Regular_Expressions