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PowerShell C heat S heet

PowerShell C heat S heet v 2

Adapted w ith p ermission f rom B en P earce’s O riginal.

Essential C ommands

Setting S ecurity P olicy

To g et h elp o n a ny c mdlet u se g et-‐help

View a nd c hange e xecution p olicy w ith G et-‐

Get-Help Get-Service

Execution a nd S et-‐Execution p olicy

To g et a ll a vailable c mdlets u se g et-‐command

Get-Executionpolicy

Get-Command

Set-Executionpolicy remotesigned

To g et a ll p roperties a nd m ethods f or a n o bject u se g et-‐member

Get-Service | Get-Member

Functions

Parameters s eparate b y s pace. R eturn i s

To E xecute S cript

optional.

function sum ([int]$a,[int]$b)

powershell.exe –noexit &”c:\myscript.ps1”

{

return $a + $b

Variables

Arrays

}

sum 4 5

Must s tart w ith $

To i nitialise

$a = 32

$a = 1,2,4,8

Can b e t yped

To q uery

True / F alse / N ull

[int]$a = 32

$b = $a[3]

Set a V ariable t o t rue

$a = $true

Check i f a V ariable i s f alse

Constants

If ($b –eq $false)

Created w ithout $

Is i t n ull?

Set-Variable –name b –value 3.142 –option constant

If ($c –eq $null)

Referenced w ith $

Creating O bjects

To c reate a n i nstance o f a c om o bject

New-‐Object -‐ comobject < ProgID>

$a = New-Object –comobject "wscript.network"

$a.username

To c reate a n i nstance o f a . Net F ramework o bject. P arameters c an b e p assed i f r equired

New-‐Object – type < .Net O bject>

$d = New-Object -Type System.DateTime 2006,12,25

$d.get_DayOfWeek()

Writing t o C onsole

Capture U ser I nput

Variable N ame

Use R ead-‐Host t o g et u ser i nput

$a = Read-Host “Enter your name”

Write-Host "Hello" $a

Write-Host $a –foregroundcolor “green”

Miscellaneous

Line B reak `

Passing C ommand L ine A rguments

Get-Process | Select-Object `

name, ID

Passed t o s cript w ith s paces

Comments #

myscript.ps1 server1 benp

# code here not executed

Accessed i n s cript b y $ args a rray

Merging l ines ;

$servername = $args[0]

$a=1;$b=3;$c=9

$username = $args[1]

Pipe t he o utput t o a nother c ommand |

Get-Service | Get-Member

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