PowerShell - 01.Overview

PowerShell Syntax - Overview





About PowerShell
Latest version: PowerShell 7.0.0 (Preview)
Stable version: PowerShell 6.2.1 core and PowerShell 5.1


> PowerShell is a task-based command-line shell and scripting language built on .NET.
> First appeared in 2006.
> It was made open-source and cross-platform on 18 August 2016.
> Commands are object-based.
> Large set of built-in commands.
> PowerShell core supports many operating systems like Windows, macOS, CentOS and Ubuntu etc.

PowerShell available in two version PowerShell Core 6.x and PowerShell 5.x


PowerShell 5.x

PowerShell Core 6.x

Platforms

Windows only (client and server)

Windows, Mac OS, Linux

Dependency

.Net Framework

.Net Core

EXE name

powershell.exe

pwsh.exe

Cmdlet

2000+

400+

Download

By default, available in all Windows OS



PowerShell makes it easy to discover (cmdlet)

PS C:\> Get-Command *-Service
PS C:\> Get-Help Get-Service
PS C:\> Get-Service | Get-Member

Or

PS C:\> Get-Command -All * | more
PS C:\> Get-Command -Verb * | more
PS C:\> Get-Command -Noun * | more
PS C:\> Get-Command -Module * | more
PS C:\> Get-Command -Module * | more

To break more, press Ctrl+c

PowerShell Syntax

In PowerShell commands (often called cmdlets) have the form:

verb-noun

that is a verb indicating the actionand a noun indicating the object for

Example:
Get-Service
New-Service
Restart-Service
Resume-Service
Set-Service
Start-Service
Stop-Service
Suspend-Service

PowerShell Module

A module is a package that contains PowerShell commands, such as cmdlets, providers, functions, workflows, variables, and aliases.

People who write commands can use modules to organize their commands and share them with others. People who receive modules can add the commands in the modules to their PowerShell sessions and use them just like the built-in commands.

Examples

Get modules imported into the current session
PS C:\> Get-Module

Get installed modules and available modules
PS C:\> Get-Module –ListAvailable

Get all exported files
PS C:\> Get-Module -ListAvailable –All

Get all installed modules
PS C:\> Get-InstalledModule

Finds a module in the default repository
PS C:\> Find-Module -Name PSWindowsUpdate

Find modules with similar names
PS C:\> Find-Module -Name *WindowsUpdate*

View the default module locations
PS C:\> $env:PSModulePath

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