Powershell - Commands & Knowledge 02

Front 1

How can I use PowerShell to See If WinRM Is configured on a group of Remote Computers?

Back 1

"s1","s2","dc1" | % { Test-WSMan $_ }

Front 2

How can I test connectivity to remote servers to ensure my Windows PowerShell scripts will work if I have the PING blocked at the firewall?

Back 2

Use Test-WsMan, for example:
's1','s2' | % {Test-Wsman $_}

Front 3

What is the best way to test for an UP server before attempting a connect to it?

Back 3

Test-Connection
The Test-Connection cmdlet sends Internet Control Message Protocol (ICMP) echo request packets ("pings") to one or more remote computers and returns the echo response replies.

Front 4

How can you run Test-Connection, then if UP, do something?

Back 4

if (Test-Connection -ComputerName www.google.com -Quiet){Write-Host "Found the site ok"} else {Write-host "Didn't find it"}

Front 5

What purpose does the ForEach-Object serve?

Back 5

The ForEach-Object cmdlet performs an operation on each item in a collection of input objects.
The input objects can be piped to the cmdlet or specified by using the InputObject parameter.

Front 6

What are two ways that you can use ForEach-Object to get the value of the ProcessName property of each process on the computer?

Back 6

Get-Process | ForEach-Object {$_.ProcessName}
Get-Process | ForEach-Object ProcessName

Front 7

Using the Get-WindowsFeature cmdlet, display a list of server roles and features that are currently installed:

Back 7

Import-Module ServerManager
Get-WindowsFeature *
Get-WindowsFeature * | Out-file c:\users\chris.orton\OSFeatures.txt

Front 8

What end of the command should you do formatting?

Back 8

Format Right - Format at the end of the commands.

Front 9

What end of the command should you do filtering?

Back 9

Filter Left - It is more efficient to filter returning data as close to the source of data as possible. e.g. filter the system event log on the server, and then return the data.

Front 10

Although you can use 'NETDOM QUERY FSMO' to list domain controllers that hold the FSMO roles, how can you do it with Windows PowerShell?

Back 10

Get-ADDomain | Select-Object InfrastructureMaster, RIDMaster, PDCEmulator
Get-ADForest | Select-Object DomainNamingMaster, SchemaMaster

Front 11

What does having a command in parentheses achieve? e.g. (Get-Service -Name gupdate).DisplayName

Back 11

The parentheses will force PowerShell to first execute the command inside the parentheses, then do the item to the right.

Front 12

The $_ symbol is a system variable that does what?

Back 12

Points to the current object in the pipeline - followed by a period and the name of a property.

Front 13

How can you chain two commands together on the same line?

Back 13

Semicolon
e.g.
"s1","s2","dc1" | ForEach-Object $_ {$_ | Add-Content D:\Temp_Scripts\test.txt ; $PSVersionTable | Out-File D:\Temp_Scripts\test.txt -Append}

Front 14

How do you continue a command over two lines?

Back 14

back tick
`

Front 15

How to display a list of CMDLETS?

Back 15

get-command | more

Front 16

With Add-Content, how do you add a new line to a text file

Back 16

Add-Content c:\scripts\test.txt "`nThe End"
`n

Front 17

How do you Add a timestamp to the end of bunch of .log files?

Back 17

$A = Get-Date; Add-Content c:\scripts\*.log $A

Front 18

What are the PowerShell versions installed in the OS by default?

Back 18

Windows 7/Server 2008 R2 - PowerShell 2.0
Win 2012 / Win 8 - PowerShell 3.0
Win 2012 R2 / Win 8.1 - PowerShell 4.0
It needs to be installed on Win 2008, Vista, 2003, XP SP2.

Front 19

What are some notable features that shipped in PowerShell 2.0?

Back 19

PowerShell Remoting, Background Job, PowerShell Integrated Scripting Environment (ISE), Network File Transfer, Block Comments

Front 20

What are some notable features / changes that shipped in PowerShell 3.0?

Back 20

Scheduled jobs, Help update, Automatic module detection
New commands: Dozens of new modules were added, including functionality to manage disks, volumes, firewalls, network connections and printer management, previously performed via WMI

Front 21

What are some notable features / changes that shipped in PowerShell 4.0?

Back 21

Desired State Configuration
Enhanced debugging
New Default Execution Policy: On Windows Servers, the default execution Policy is now RemoteSigned

Front 22

What are some notable features / changes that will probably ship in PowerShell 5.0?

Back 22

Key features include OneGet PowerShell scriptlets to support Chocolatey's repository-based package management and extending support for switch management to layer 2 network switches

Front 23

How can you show the operating system install date?

Back 23

gwmi -query 'Select InstallDate from CIM_OperatingSystem' -computername localhost -namespace root\cimv2 | Select InstallDate

Front 24

With PowerShell 2.0, how can you display a list of services that have a start type of Automatic, but that aren’t currently started?

Back 24

# This works with PowerShell 2.0
Get-WMIObject Win32_service | Sort-Object Name | Where-Object {$_.StartMode -eq "Auto" -AND $_.State -eq "Stopped"}

Front 25

With PowerShell 3.0, how can you display a list of services that have a start type of Automatic, but that aren’t currently started?

Back 25

# This works with PowerShell 3.0
Get-CimInstance win32_service | Sort-Object Name | Select-Object Name,State,StartMode | Where-Object {$_.StartMode -eq "Auto" -AND $_.State -eq "Stopped"}