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Getting Started with Powershell

Book Image

Getting Started with Powershell

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Getting Started with Powershell
Aug, 2015 | 180 pages
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Table of Contents (19 chapters)
Getting Started with PowerShell
Getting Started with PowerShell
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
First Steps
First Steps
Determining the installed PowerShell version
Installing/upgrading PowerShell
Starting a PowerShell session
Simple PowerShell commands
PowerShell aliases
Summary
For further reading
2
Building Blocks
Building Blocks
What can you do?
The scripter's secret weapon – tab completion
How does that work?
Interpreting the cmdlet syntax
Summary
For further reading
3
Objects and PowerShell
Objects and PowerShell
Objects all the way down
What are members?
The Get-Member cmdlet
Where did these all come from?
Summary
For further reading
4
Life on the Assembly Line
Life on the Assembly Line
The pipeline as an assembly line
Dealing with pipeline data
Putting them together
Summary
For further reading
5
Formatting Output
Formatting Output
When does formatting occur?
The rules of automatic formatting
Cmdlets that control formatting
The dangers of formatting
Best practices of formatting
Summary
For further reading
6
Scripts
Scripts
Packaging commands
Parameters add flexibility
Adding some logic
Profiles
Summary
For further reading
7
Functions
Functions
Another kind of container
Executing and calling functions
Naming conventions
Comment-based help
Parameters revisited
Default values for parameters
Output
Summary
For further reading
8
Modules
Modules
Packaging functions
Script modules
Where do modules live?
Removing a module
PowerShell module autoloading
The #Requires statement
Removing a module – take two
Listing modules
Summary
9
File I/O
File I/O
Reading and writing text files
Working with CSV files
PowerShell streams and redirection
CLIXML – a special type of XML
Summary
For further reading
10
WMI and CIM
WMI and CIM
What is WMI?
Finding WMI classes
Retrieving objects with Get-WMIObject
Calling methods
WMI and CIM
CDXML modules
Summary
For further reading
11
Web Server Administration
Web Server Administration
Installing IIS
Verifying IIS
The WebAdministration module
Starting, stopping, and restarting IIS
Creating virtual directories and web applications
Working with application pools
Summary
For further reading
Next Steps
Next Steps
Index
Index

Summary

The functions in PowerShell are powerful and extremely useful to create flexible, reusable code. Parameters, including switch parameters, allow you to tailor the execution of a function to meet your needs. PowerShell functions behave differently from functions in many other languages, potentially outputting multiple objects of different types and at different times.

In the next chapter, we will look at PowerShell modules, a feature added in PowerShell 2.0 to help gather functions and scripts into libraries.

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