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![Class Syntax
Class <Class_Name>
{
#Properties
<Data_Type> $<Variable_Name>
}
#Methods
[Return Type] <Method_Name> {
# Script
}
#Creating an object
$<Object_Name> = New-Object –TypeName <Class_Name>
#Calling a method
<Object_Name>.<Method_Name>()](https://image.slidesharecdn.com/powershellpresentation-170328192826/85/Introduction-to-Powershell-Version-5-14-320.jpg)
![Class Example
class Person {
#Properties
[string]$lastName
[string]$firstName
#Methods
[void] SetLast ( [string]$ln )
{
$this.lastName = $ln
}
[string] ToString ( [String]$firstName,
[String]$lastName )
{
return $firstName + " " + $lastName
}
}# end class Person](https://image.slidesharecdn.com/powershellpresentation-170328192826/85/Introduction-to-Powershell-Version-5-15-320.jpg)
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Introduction to Powershell Version 5
- 1.
- 2. Agenda What is Powershell? Working with Powershell Cmdlets Scripting in Powershell Powershell Classes
- 3. What is Powershell Task automation and configuration management framework Interactive object-oriented command line shell Interactive editor Scripting language Based on .Net Framework Access to COM and WMI Both local and remote
- 4. How to installPowershell in Mac https://github.com/PowerShell/PowerShell http://www.howtogeek.com/267858/how-to-install-microsoft- powershell-on-linux-or-os-x/
- 5.
- 6. Cmdlets Heart-and-Soul ofWindows PowerShell Written in .Net framework language PowerShell cmdlets use the Verb-Noun format as in Get- Service, Stop-Service, or Import-Csv
- 7. Difference between cmdletsand commands Instances of .NET Framework classes; they are not stand-alone executables. Can be created from as few as a dozen lines of code. Parsing, error presentation, and output formatting are handled by the Windows PowerShell runtime. Process input objects from the pipeline rather than from streams of text Deliver objects as output to the pipeline. Cmdlets are record-oriented as they process a single object at a time.
- 8. 5 cmdlets toget started with Powershell Get-Command Gets all commands that are installed on the computer Get-Help Help describe powershell cmdlets, functions, scripts and modules Get-Member Gets the members, the properties and methods of objects Get-Process Gets the processes on a local or remote computer Where-Object Filter input from the pipeline and control which objects will be passed along
- 9.
- 10. Scripting in Powershell Script file in Powershell is a plain-text file with .PS1 extension Supports variables, functions, branching, loops, structured error/exception handling as well as integration with .NET Fundamental Concepts Pipelining Pipelining is the term for feeding one command's output into another command, to pipeline two commands (or cmdlets), simply separate them with the pipe symbol (|) Variables Can store a command's full output, variables in PowerShell scripts are prefixed with $ @ symbol This symbol can turn the contents of a list into an array
- 11. Set-Execution Policy Restricted :Scripts won't run RemoteSigned : Locally-created scripts will run AllSigned : Scripts will only run if signed by a trusted publisher Unrestricted : All scripts will run regardless of who created them and whether or not they are signed
- 12. Script Example $colItems =get-wmiobject -class "Win32_Printer" -namespace "rootCIMV2" - computername $strComputer
- 13. Powershell Classes Class Definition of a template for creating objects. The class can define properties (data fields) and methods (the way to perform a task) Object An object is created from a class definition. New-Object cmdlet is used to create an object Module A PowerShell module is a .psm1 file that contains one, or more, PowerShell functions – usually advanced functions.
- 14. Class Syntax Class<Class_Name> { #Properties <Data_Type> $<Variable_Name> } #Methods [Return Type] <Method_Name> { # Script } #Creating an object $<Object_Name> = New-Object –TypeName <Class_Name> #Calling a method <Object_Name>.<Method_Name>()
- 15. Class Example class Person{ #Properties [string]$lastName [string]$firstName #Methods [void] SetLast ( [string]$ln ) { $this.lastName = $ln } [string] ToString ( [String]$firstName, [String]$lastName ) { return $firstName + " " + $lastName } }# end class Person
- 16. Summary Powershell isa task automation tool built on .Net framework with interactive command line shell and editor Scripting language designed specially for administrative tasks Built-in Windows PowerShell commands, called cmdlets, that allows us to manage the computers from the command line 5 basic cmdlets to get started with Powershell Powershell script files have a .PS1 extension Scripting in Powershell supports pipelining and can handle functions, branching, loops and exception handling Execution Policy for running scripts in Powershell for avoiding malicious code execution Powershell classes contains properties and methods; Objects can be created with New-Object cmdlet
- 17. Resources https://msdn.microsoft.com/en-us/powershell/scripting/core- powershell/ise/introducing-the-windows-powershell-ise https://blogs.technet.microsoft.com/heyscriptingguy/2015/01/02/wh at-is-powershell/ https://msdn.microsoft.com/en-us/library/ms714395(v=vs.85).aspx http://www.howtogeek.com/114344/5-cmdlets-to-get-you-started- with-powershell/ https://technet.microsoft.com/en-us/library/cc732114(v=ws.10).aspx https://technet.microsoft.com/en-us/scriptcenter/dd742419
Editor's Notes
- #5 Before getting to know more about Powershell, Let's see how we can install Powershell in Mac. Powershell is a product of Microsoft Windows but has recently become cross-platform and is now available for Mac / Linux.I have provided two links from where you can download the package for any platform. I will now demonstrate how to install and use Powershell in Mac. First you need to download the.pkg file from the mentioned link,once you have downloaded click on the file and follow theinstallation instruction. After the installation is complete open terminal window