Lawrence Hwang LawrenceHwang

Only in PS Core 6

Cmdlet	Module
Remove-Service	Microsoft.PowerShell.Management
Get-Uptime	Microsoft.PowerShell.Utility
Remove-Alias	Microsoft.PowerShell.Utility

|Cmdlet|Module|

Use Arrays if you know the element types and have a fixed length and/or known-up-front collection size that will not change.
Use ArrayList if you have an unkown collection size with either unknown or mixed type elements.
Use a Generic List when know the type of the elements but not the size of the collection.
Use a HashTable if you are going to do key based lookups on a collection and don't know the object type of the elements.
Use a Dictionary<TKey, TValue> you are going to do key based lookups on a collection and you know the type of the elements.
Use a HashSet when you know the type of elements and just want unique values and quick lookups and assignmnets.

	# Fix the locked changed block tracking file for vms in a VMWare environment.
	# It it achieved by flipping the changed block tracking settings.
	# Snapshot is used as an alternative so the setting can be changed.
	# Requires VMWare PowerCLI 5.1 and PowerShell V3 or above.

	#Add the required PowerPLI cmdlets
	Add-PSSnapin VMware.VimAutomation.Core

	#Parameters
	$vCenter="vCenter"

	# !/bin/bash

	# Please manually download the omi-1.0.8.4.
	# The wget doesn't work because of the javascript used in the site
	# https://collaboration.opengroup.org/omi/documents/34607/omi-1.0.8.4.packages.tar.gz

	yum -y install pam-devel
	yum -y install openssl-devel

	# wget https://collaboration.opengroup.org/omi/documents/34607/omi-1.0.8.4.packages.tar.gz

	<#
	This is not a complete code and inteneded to be used with other codes.
	The goal is to grab a collection of names, vms..etc and then:
	- Do some work to the collection in smaller batches
	- The batch work should be sent to background for "parallel" execution
	- Have a way to check the status of each object in the batch work
	- If completed work(s) is found, pull next object(s) from the collection

	The status of last batch is not tracked. Improvements can be made in future version.
	#>

	<#
	.Synopsis
	A wrapper for the tasklist /v /s COMPUTERNAME
	.DESCRIPTION
	This is a wrapper for the tasklist command. In the case PowerShell remoting is not available, this cmdlet would be useful to gather the process infromation.

	#>
	function Get-Tasklist
	{
	[CmdletBinding()]

	function Get-PSWindowsUpdateLog
	{
	<#
	.Synopsis
	Parsing WindowsUpdate.log to objects for easy reporting. Default will retrieve the most recent 100 entires only.
	.DESCRIPTION
	This function will retrieve and then parse the c:\windows\system32\WindowsUpdate.log on local or remote computers. Using the -all parameter, the full log will be retrieved but this could be lengthy.
	.EXAMPLE
	PS E:\_PSTemp> Get-PSWindowsUpdateLog -ComputerName localhost

	# Source: https://blogs.msdn.microsoft.com/mssmallbiz/2016/07/10/how-to-download-all-of-the-free-ebooks-and-resources-in-my-free-ebooks-giveaway/
	# Source: http://www.mssmallbiz.com/ericligman/Key_Shorts/MSFTFreeEbooks.txt
	# Script for convenience. No proper error handling whatsoever. Saves to user's download\FreeEbook folder.


	# Parsing the http links
	$LinkSource = 'http://www.mssmallbiz.com/ericligman/Key_Shorts/MSFTFreeEbooks.txt'
	$link = ((Invoke-WebRequest -Uri $LinkSource).content -split "`n" \| where {$_ -like 'http://*'}).trim()

	$path = '~\Downloads\FreeEBook'

	$instances = Get-ec2instance -Filter @(@{name = 'platform'; value = 'windows'})
	foreach ($i in $instances){
	$prop = @{
	Name = $i.Name
	password = Get-EC2PasswordData -InstanceId $i.InstanceId -PemFile "C:\path\to\private\keys\$($i.KeyName).pem"
	InstanceId = $i.instances.InstanceId
	}
	$obj = New-Object -TypeName psobject -Property $prop

	$obj