Introduction to PowerShell at Chicago Code Camp 2015

2014

Introduction to PowerShell MICHAEL BLUMENTHAL

PSC GROUP, LLC

2014

Who is Michael Blumenthal?

• Sr. Solution Architect at PSC Group

• Office 365 MVP

• CSPUG Co-Leader

• 20 years in IT Consulting

• 8 years working with PowerShell

2014

This is about you

• Anyone used PowerShell before?

• Who’s done scripting before? Windows? Unix?

• Developer or Administrator?

2014

Why PowerShell?

Command line control of

2014

PowerShell puts .NET at your fingertips!

• It’s Easy to Get Started!1

• Learn the PowerShell Syntax2

• Real World Examples3

• Best Practices4

• More Resources5

2014

Chapter 1

2014

Getting Started with PowerShell

20032008,R22012, R210

7, 8, 8.1, 10

2014

Windows Feature

2014

The Command Line Window

2014

The Integrated Script Editor

2014

PowerShell V3&4 ISE

2014

Intellisense!

2014

Chapter 2

2014

Symbols, Keywords, and Syntax! Oh My!

• Variables1

• Commands2

• Piping3

• Comparisons4

• Flow Control5

• Filtering6

2014

Reading Symbols in Code

•(tal Guidance

•Moe, Larry, and }

•The universe started with the Big !

•!Important

•A # of Bacon and # Browns

2014

Variables

• Case Insensitive, Dynamic typing

$something

$true, $false, $null, $profile

$myMessage= “Hello, World”

1

2014

Commands are called cmdlets.

Verb-Noun

Built-in, Extensible

Get-Help & Help

Get-Member

2

2014

Help!

Discoverability

2014

The Power of Piping!

Output Of Command 1

Input of Command 2

3

2014

Example

2014

Dial zero for an…4

Operator

-eq -le

-ne -like

-gt -notlike

-ge -match

-lt -notmatch

Example

2014

Taking Control of the Flow

• For (Init;Test;Repeat) {Commands}

• for($i=1; $i -le 10; $i++) {Write-Host $i}For

• Foreach (Item in Collection) {Commands}

• Foreach ($web in $site.AllWebs) {$web.Title}• Collection | Foreach {Commands}

ForEach

• If (Test) {Commands} else {Commands}

• if ($web.Title –ne “”) {Write-Host $web.Title}If

• While (Condition){Commands}

• while($val -ne 3){$val++; Write-Host $val}While

5

2014

Example

2014

Where-Object

•Where {<Test>}Syntax

• V1&2:Dir | Where {$_.Name –like “B*”}

• V3:Dir | where Name –like B*Example

6

2014

Executing Scripts

.\filename.ps1

Set-ExecutionPolicyUnrestricted

2014

Chapter 3

2014

Real World Examples

• Flash cards

•Dell Service Tag

•Audio Alerts

• File Conversion & Text Manipulation

•Managing Microsoft Server Products

2014

Flash Cards

2014

Get-DellServiceTag

• Get-WmiObject win32_SystemEnclosure | select serialnumber

2014

Audio Alerts

• Stick this at the end of your long running script:

$Voice = new-object -com SAPI.SpVoice$Voice.Speak(“Deployment is done!")

2014

File and Text Wrangling

• Word

• AutoDOCX

• RegEx

• PSObjTXT

• Export-

• CSVCSV

2014

Server Management

Server/Service What you can script

Azure Virtual Machines

Exchange Mailboxes

Office 365 Sites

SharePoint Everything

SQL Queries

Windows Server File system

2014

Chapter 4

2014

Comment your functions

• <#

• .SYNOPSIS –a brief explanation of what the script or function does.

• .DESCRIPTION – a more detailed explanation of what the script or function does.

• .PARAMETER name – an explanation of a specific parameter. Replace namewith the parameter name. You can have one of these sections for each parameter the script or function uses.

• .EXAMPLE – an example of how to use the script or function. You can have multiple .EXAMPLE sections if you want to provide more than one example.

• .NOTES – any miscellaneous notes on using the script or function.

• .LINK – a cross-reference to another help topic; you can have more than one of these. If you include a URL beginning with http:// or https://, the shell will open that URL when the Help command’s –online parameter is used.

• #>

2014

Find custom commands this way

Refresh the command list

Actions you can take once you fill in parameters

2014

Self Announcing Functions

…

2014

Source Code Control

2014

More Good Ideas

• Always read scripts before running them

• Make yours safe when others don’t

• Check for valid parameter values

• get-help about_Functions_Advanced_Parameters

• Do error handling

• get-help about_Try_Catch_Finally

• get-help about_CommonParameters• -ErrorAction and -ErrorVariable

2014

Chapter 5

2014

2014

2014

2014

Script something today!

It’s Easy to Get Started!

PowerShell Syntax

More Resources

In Review…

2014

Questions

• Michael BlumenthalSr. Solution ArchitectPSC Group, LLC

• [email protected]

• psclistens.com

• MichaelBlumenthal.me

• Twitter: @MichaelBL

• LinkedIn

• Microsoft Midwest Customers Yammer Network

Thank you for your time today.