powershell-cheat-sheet.md

PowerShell Scripting Cheatsheet

Input/Output	Objects Everywhere	String Quotes
#Basic Input/Output $Name = Read-Host "Your Name Plz" Write-Host "Hello $Name"	$my_string = "Hello" $my_string.Length #=> 5 $my_string.ToUpper() #=> HELLO	$NAME="John" Write-Host "Hi $NAME" #=> Hi John Write-Host 'Hi $NAME' #=> Hi $NAME

# Conditional Structure

if-else	switch-case	expressions
if($expression -eq $true){ Write-Host "Cond. True" } elseif{ Write-Host "2nd True" } else{ Write-Host "Cond. False" }	switch ($x) { 'value1' {} {$_ -in 'A','B','C'} {} 'value3' {} Default {} }	$true #=> True 1 #=> True $null #=> False $empty = "" #=> False CmdLet-ReturnsFalse #=> False

# Loop Structure

do-while	do-until	For Loop	ForEach Loop
do { # Code } while ($x -gt 0)	do { # Code } until ($x -gt 0)	for ($i = 1; $i -lt 99; $i++){ # Code }	foreach($item in $collection){ Write-Output $item }

# Arrays

Defining Arrays	Working with Arrays
$my_numbers = 1..100 $Fruits = 'Apple', 'Banana', 'Orange' $Fruits = @('Apple', 'Banana', 'Orange') $Fruits[0] = "Apple" $Fruits[1] = "Banana" $Fruits[2] = "Orange"	Write-Host $Fruits[0] # Element #0 Write-Host $Fruits.Count # Number of elements Write-Host $Fruits[0].Length # String length of the 1st element Write-Host $Fruits[0..1] # Array from first to Nth element Write-Host $Fruits[-2] # Second last element of the Array

Hash Table or Dictionary
$my_vm_config = @{ "hostname" = "vm00002314"; "pvt_ip" = "10.48.3.12"; "domain"= "vikiscripts.github.io" } Write-Host $my_vm_config.pvt_ip #=> 10.48.3.12

# Execute PowerShell Script from GitHub

Execute a Remote Script
iex ((New-Object System.Net.WebClient).DownloadString('https://gist.githubusercontent.com/hclpandv/76739cc615f3eee0d4722243379d324f/raw/9573fa17aadee9f0b5fb71d38cccefde8b4a220b/CheckSumCalc.ps1'))