PowerShell Slides

What’s PowerShell
Varun Varghese +91 9986599326 varunmuriyanat@gmail.com 1
• Scripting Environment
• Scripting Language
• Windows equivalent of UNIX Shell Script (but even more powerful)

Interactive Shell

History

Versions

.Net Framework

Installing the latest version
https://www.microsoft.com/en-us/download/details.aspx?id=46889

ISE – The PowerShell IDE

Case Insensitive
Get-service
get-service
Get-Service

Installing/Accessing PowerShell

Updating the help in PowerShell

Get help in PowerShell
Get-Help

Execution Policy

Get & Set Cmdlets
Get-<Command>
Set-<Command>

Comments

Writing to Console

Clear Screen

Aliases

Variables

Data types

Pipelining
.Net objects passed down the pipeline

Listing directory Contents

Recursive listing

ErrorAction SilentlyContinue

Looping using Foreach-Object

Filtering using Where-Object

Sorting using Sort-Object

PowerShell v/s UNIX Shell

Assignment Operators
=
+=
-=
*=
/=
%=
++
--

Comparison Operators
-eq
-ne
-gt
-ge
-lt
-le
-replace
-contains
-notcontains
-in
-notin
-match
-notmatch
-like
-notlike
-is
-isnot
-as

Comparison Operators: -eq, -ne

Comparison Operators: -gt, -ge

Comparison Operators: -lt, -le

Comparison Operators: -replace

Comparison Operators: -contains,
-notcontains

Comparison Operators: -in, -notin

Comparison Operators: -match, -
notmatch

Comparison Operators: -like, -
notlike

Comparison Operators: -is, -isnot

Comparison Operators: -as

Logical Operators

Split, Join, foreach

Casting

Redirection Operators

Handling arrays

Dictionary/hash tables

Object Properties

Object Methods

String manipulation

Sorting Objects

PowerShell automatic variables

Searching filesystem using PS

Getting System processes

Getting list of services

Filtering objects
https://technet.microsoft.com/en-us/magazine/2007.04.powershell.aspx
http://windowsitpro.com/powershell/powershell-basics-filtering-objects
http://www.howtogeek.com/138324/geek-school-learning-formatting-filtering-and-comparing-in-
powershell/
http://searchwindowsserver.techtarget.com/feature/Filtering-output-from-Windows-PowerShell

Copying files/directories

Reading from file

Writing to file

Appending to a file

Deleting file/directory

Renaming a file/directory

Reading from Excel

Reading from CSV

Writing to CSV

Writing to Excel

Export-CSV

Reading large files

Exporting as CSV

Importing CSV

Appending to file

User defined Functions
http://windowsitpro.com/windows/create-your-own-powershell-functions

Param in functions

Passing parameters to functions

Parameters from Pipeline

Error Handling

Logging Error

Exception Handling
http://www.vexasoft.com/blogs/powershell/7255220-powershell-tutorial-try-catch-finally-and-
error-handling-in-powershell
http://blogs.msdn.com/b/kebab/archive/2013/06/09/an-introduction-to-error-handling-in-
powershell.aspx
http://blogs.technet.com/b/heyscriptingguy/archive/2014/07/09/handling-errors-the-
powershell-way.aspx

Output formatting
https://technet.microsoft.com/en-us/library/dd347677.aspx
https://technet.microsoft.com/en-us/magazine/2008.06.windowspowershell.aspx
http://www.computerperformance.co.uk/powershell/powershell_format_table.htm
http://www.computerperformance.co.uk/powershell/powershell_-f_format.htm
http://blogs.technet.com/b/heyscriptingguy/archive/2011/02/23/format-powershell-output-with-
an-easy-to-use-table.aspx
http://windowsitpro.com/powershell/powershell-basics-formatting

Advanced formatting

Redirecting formatted output

Modules

Navigating the Registry

Regex

Starting a new Job

WMI
• Windows Management Interface
• Created by Microsoft
• Is Microsoft’s implementation of CIM
• CIM is the super class for WMI. Eq Win32_DiskDrive is derived from CIM_DiskDrive
• Doesn’t work with the routers, switches or other network devices
• Doesn’t support discoverabilty

WMI
http://blogs.technet.com/b/heyscriptingguy/archive/2009/08/05/hey-scripting-guy-can-windows-
powershell-call-wmi-methods.aspx
http://www.computerperformance.co.uk/powershell/powershell_wmi.htm
http://www.darkoperator.com/blog/2013/2/6/introduction-to-wmi-basics-with-powershell-part-2-
exploring.html
http://www.lazywinadmin.com/2015/03/standard-and-advanced-powershell.html
WMI Administrative Tools
http://www.microsoft.com/en-us/download/details.aspx?id=24045
Windows COM (Component Object Model)

WMI Explorer
Download WMI Explorer from https://wmie.codeplex.com/

WQL (WMI Query Language)

CIM
• Common Information Model
• Set up by DTMF (Desktop Management Task Force)
• http://www.dmtf.org/standards/cim
• An open model compared to WMI
• Common model for managing systems, switches, routers and other n/w
devices
• Enables extension of the API by vendors
• The goal is to make PowerShell the platform to manage both windows & non-
windows
• Faster than WMI
“CIM provides a common definition of management information for systems,
networks, applications and services, and allows for vendor extensions. CIM’s
common definitions enable vendors to exchange semantically rich management
information between systems throughout the network.”

PS Provider
• Its an interface
• It makes any storage look like a disk drive
• Could be filesystem, registry
• Providers are used to create drives

https://technet.microsoft.com/en-us/library/ee126186(v=vs.85).aspx
https://technet.microsoft.com/en-us/library/dd315335.aspx
https://technet.microsoft.com/en-us/library/ee176857.aspx
PS Provider

PS Drive
A PowerShell Drive is some sort of a storage adapted to look like a disk drive

PS Drive

New-PSDrive

Administration Automation

Connecting to SQL Server

Creating Database, Tables in SQL

Importing data into SQL Server

Connecting to Remote machines

Importing libraries

OOP in PowerShell
https://psclass.codeplex.com/

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