Powershell - Commands & Knowledge 03

Front 1

What was Microsoft’s goal for Windows PowerShell?

Back 1

To build 100% of a product’s administrative functionality in the shell.

Front 2

What is the command to tell what PowerShell version is use?

Back 2

$PSVersionTable.psversion

OR just

$PSVersionTable

Front 3

What is one advantage of using the PowerShell ISE, and what do MS call this?

Back 3

Autocompletion, Intellisense

Front 4

What is pipelining?

Back 4

The pipeline provides a way for one command to pass, or pipe, its output to another command, allowing that second command to have something to work with.

Front 5

What is an Object?

Back 5

Object - think of a "table row". It represents a single thing, like a process of a single service.

e.g. Chrome.exe CPU = 50%

Front 6

What is a Property?

Back 6

Property - think of a "table column". It represents one piece of information about an object, like a process name, process ID, or service status.

e.g. for Processes: CPU, handles, VM, etc.

Front 7

What is a Method?

Back 7

Method - this is what is called an "action". A method is related to a single object and makes that object do something like killing a process or starting a service.

Start-Process

Front 8

What is a Collection?

Back 8

Collection - This is the entire set of objects, or what we've been calling a "table".

Processes

Front 9

Why use Objects to represent data?

Back 9

It gives more power and flexibility. Example; retrieving data from a table in Linux/Unix using Grep (i.e. needs lots of text manipulation) versus in Windows with PowerShell (grab it once from a table column).

Front 10

How do you get information on the entire data set of a Collection ("the table")?

Back 10

[CMDLET name] | Get-Member
If objects are like a giant table in memory, and PowerShell only shows you a portion of that table on the screen, use Get-Member to see the rest of the table.

Front 11

All of the properties, methods, and other things attached to an object are collectively called its ___________

Back 11

Members, as if the object itself were a country club and all of these properties and methods belonged to the club.

Front 12

What does the Select-Object CMDLET do?

Back 12

Selects specified properties of an object or set of objects. It can also select unique objects, a specified number of objects, or objects in a specified position in an array.

Front 13

How do you show the value of a Property using a syntax in the command?

Back 13

Use the -Property switch:
Get-Service -name gupdate | Format-Wide -Property Displayname
Google Update Service (gupdate)

Front 14

What is a 2nd way to show the value of a Property, using the dot approach?

Back 14

Use the .PropertyName:
(Get-Service -Name gupdate).DisplayName

Front 15

What is a 3rd way to show the value of a Property, using the variable approach?

Back 15

$GUpdateSVC = Get-Service -name gupdate
$GUpdateSVC.Displayname

Front 16

What is a Method in PS terminology?

Back 16

An action, e.g.
$GUpdateSVC = Get-Service -name gupdate
$GUpdateSVC.Stop(

Front 17

How do you get info on what Methods are available?

Back 17

CMDLET | Get-Member
Variable | Get-Member
$GUpdateSVC = Get-Service -name gupdate
$GUpdateSVC | Get-Member

Front 18

When you call a Method, what do you need to have at the end?

Back 18

Parentheses
$GUpdateSVC = Get-Service -name gupdate
$GUpdateSVC.Stop()

Front 19

What is the value of Chocolatey to automation?

Back 19

Sort of like YUM or APT-GET but for Windows - the ability to download and install packages in one go.

"choco install chrome"
"choco install firefox"
https://chocolatey.org/

Front 20

How can you ensure your PowerShell help files are current?

Back 20

Update-Help

Front 21

How can you describe Windows PowerShell in one sentence?

Back 21

Windows PowerShell is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and associated scripting language built on the .NET Framework.

Front 22

What does PowerShell provide?

Back 22

PowerShell provides full access to COM and WMI, enabling administrators to perform administrative tasks on both local and remote Windows systems as well as WS-Management and CIM enabling management of remote Linux systems and network devices.

Front 23

What are PowerShell CMDLETS?

Back 23

The native commands in the PowerShell stack.
Cmdlets are specialized .NET classes, which the PowerShell runtime instantiates and invokes when they are run.

Front 24

What is the naming pattern for CMDLETS?

Back 24

Cmdlets follow a Verb-Noun naming pattern, such as Get-ChildItem, helping to make them self-descriptive.

Front 25

How do CMDLETS output their results?

Back 25

Cmdlets output their results as objects, or collections thereof (including arrays), and can optionally receive input in that form, making them suitable for use as recipients in a pipeline.