diecknet

# ACHTUNG! Das funktioniert nur, wenn das Company Attribut bei euren E-Mail Empfängern richtig gesetzt ist.
# Falls das Company Attribut leer ist, oder ein anderer Wert drin ist, müsst ihr einen anderen Filter verwenden.
# Oder das Attribut bei den Usern entsprechend setzen.

$CompanyName = "Demotenant"
New-DynamicDistributionGroup -Name "Alle-$($CompanyName)-Empfänger" -RecipientFilter "company -like '$($CompanyName)*'"

diecknet

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\Start\HideRestart]
"value"=dword:00000001

diecknet

# Script: Beispiel1.ps1
Write-Host '$a='$a
$a = "moin"
Write-Host '$a='$a

diecknet

switch(Get-Date) {
    # $PSItem ist übrigens das gleiche wie $_
    {$PSItem.Year -gt 2022} {
        "Es ist nach 2022"
        break
    }
    default {
        "Es ist vor 2023"
    }
}

diecknet

function Get-MachineSID {
    # Going for the local SID by finding a local account and removing its Relative ID (RID)
    $LocalAccountSID = Get-WmiObject -Query "SELECT SID FROM Win32_UserAccount WHERE LocalAccount = 'True'" |Select-Object -First 1 -ExpandProperty SID
    $MachineSID      = $LocalAccountSID -replace '-[^-]+$'
    return $MachineSID
}

diecknet

<#
Hashtable Access Performance Test
Settings:
$maxentries = Number of entries to put into the hashtable
$iterations = Number of access test per method
#>

$maxentries = 100000
$iterations = 5000
$meineHashtable = @{}

diecknet

function Convert-SPOTimezoneToString(
# ID of a SPO Timezone
[int]$ID
) {
<#
.SYNOPSIS
Convert a Sharepoint Online Time zone ID to a human readable string.

.NOTES
By Andreas Dieckmann - https://diecknet.de

diecknet

########################################################################################
# Add DNS Host A entry with PowerShell
# Forward / Host A
Add-DnsServerResourceRecordA -Name "test123" -ZoneName "myzone.local" -IPv4Address "10.0.0.1" -ComputerName mydnsserver

# Add PTR:

Add-DnsServerResourceRecordPtr -ZoneName 00.10.in-addr.arpa -Name 1.0 -PtrDomainName myhost.myzone.local -ComputerName mydnsserver

########################################################################################

diecknet

<# 
I initially used this code:
history | Select-Object -Last 1 -ExpandProperty CommandLine | clip

But recently found this shorter version at https://powershellmagazine.com/post/2012-11-06-pstip-send-the-last-command-executed-to-clipboard/ 

#>

(Get-History)[-1].commandline | clip

diecknet

<# by diecknet  
 #  This script is mostly based on code by reddit users /u/bernys and /u/Lanathell
 #  I added checks to see if DNS service is running again.
 # Also see: 
 # - https://support.microsoft.com/en-us/help/4569509/windows-dns-server-remote-code-execution-vulnerability
 # - https://www.reddit.com/r/sysadmin/comments/hr5dfe/keep_your_eyes_out_for_a_critical/
 #>

Import-Module ActiveDirectory
$AllDomainControllers = (Get-ADForest).Domains | %{ Get-ADDomainController -Filter * -Server $_ }