Core

Get-Help – Displays information about PowerShell commands and concepts

Get-Help Select-String
Get-Help Select-String -examples

This example displays the online version of the help article for the Format-Table cmdlet in your default web browser:

Get-Help Format-Table -Online

Downloads and installs the newest help files on your computer:

sudo Powershell.exe Update-Help

https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/get-help

Get-History – Gets a list of the commands entered during the current session

Get-History [[-Id] <long[]>] [[-Count] <int>] [<CommonParameters>]

Get-History

https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/get-history

Invoke-Command – Runs commands on local and remote computers

Invoke-Command -FilePath C:\scripts\test.ps1 -ComputerName Server01

https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/invoke-command

Grep equivalent

Get-WindowsCapability -Online | Select-Object Name | Select-String -Pattern 'SNMP'

Output format

Format-Custom
Format-Hex
Format-List
Format-Table
Format-Wide

Custom properties

Get-Volume | Select-Object -Property DriveLetter,FileSystemLabel,@{label="Size(GB)";expression={$_.size/1GB}}

Within the ScriptBlock, you can use the $_ variable to reference the current object in the pipeline.

https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/select-object?view=powershell-7.2

Tasks

Get hostname

$env:COMPUTERNAME

Run a script without interferences

powershell.exe -ExecutionPolicy Bypass myscript.ps1

Get Powershell version

Get-Host | Select-Object Version

To create a blank file

New-Item -ItemType file example.txt
ni -i file example.txt

https://theitbros.com/run-powershell-script-on-remote-computer/