Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Mastering Windows PowerShell Scripting (Second Edition)
  • Table Of Contents Toc
  • Feedback & Rating feedback
Mastering Windows PowerShell Scripting (Second Edition)

Mastering Windows PowerShell Scripting (Second Edition)

By : Chris Dent, Brenton J.W. Blawat
3.3 (8)
close
close
Mastering Windows PowerShell Scripting (Second Edition)

Mastering Windows PowerShell Scripting (Second Edition)

3.3 (8)
By: Chris Dent, Brenton J.W. Blawat

Overview of this book

PowerShell scripts offer a handy way to automate various chores. Working with these scripts effectively can be a difficult task. This comprehensive guide starts from scratch and covers advanced-level topics to make you a PowerShell expert. The first module, PowerShell Fundamentals, begins with new features, installing PowerShell on Linux, working with parameters and objects, and also how you can work with .NET classes from within PowerShell. In the next module, you’ll see how to efficiently manage large amounts of data and interact with other services using PowerShell. You’ll be able to make the most of PowerShell’s powerful automation feature, where you will have different methods to parse and manipulate data, regular expressions, and WMI. After automation, you will enter the Extending PowerShell module, which covers topics such as asynchronous processing and, creating modules. The final step is to secure your PowerShell, so you will land in the last module, Securing and Debugging PowerShell, which covers PowerShell execution policies, error handling techniques, and testing. By the end of the book, you will be an expert in using the PowerShell language.
Table of Contents (18 chapters)
close
close

Enumerating and filtering


Enumerating, or listing, the objects in a collection in PowerShell does not need a specialized command. For example, if the results of Get-PSDrive were assigned to a variable, enumerating the content of the variable is as simple as writing the variable name and pressing Return:

PS> $drives = Get-PSDrive
$drives
Name     Used (GB) Free (GB) Provider   Root
----     --------- --------- --------   ----
Alias                        Alias 
C           319.37   611.60  FileSystem  C:\
Cert                         Certificate \ 
Env                          Environment 
...

ForEach-Object may be used where something complex needs to be done to each object.

Where-Object may be used to filter results.

The ForEach-Object command

ForEach-Object is most often used as a loop (of sorts). For example, the following command works on each of the results from Get-Process in turn:

Get-Process | ForEach-Object { 
    Write-Host $_.Name -ForegroundColor Green 
}

In the preceding example...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY