Basic PowerShell Scripting: Level 1 What You Will Learn...................................................................................................................... 1 What is PowerShell ......................................................................................................................... 2 Leveraging .NET....................................................................................................................... 2 PowerShell ISE ............................................................................................................................... 3 PowerShell ISE Console ........................................................................................................... 3 PowerShell ISE Toolbar ........................................................................................................... 4 PowerShell ISE Windows ......................................................................................................... 5 Objects ............................................................................................................................................ 6 Members, Properties and Methods ........................................................................................... 6 Using the Property or Method of an Object .............................................................................. 7 PowerShell Commands ................................................................................................................... 8 Breaking Out of a Command .................................................................................................... 8 PowerShell Command Types and Aliases ................................................................................ 8 Commands that Provide Help ................................................................................................. 10 Line Continuation ................................................................................................................... 12 Pipelines ........................................................................................................................................ 13 Execution Policy ........................................................................................................................... 15 Execution Policy Scope .......................................................................................................... 15 Local Policy Setting and Group Policy Setting ...................................................................... 16 Determine the Execution Policy ............................................................................................. 16 Setting the Execution Policy ................................................................................................... 16 To Display the Current User Policy Setting ........................................................................... 17 Remove the Execution Policy ................................................................................................. 17 Setting the Scope of the Execution Policy .............................................................................. 17 PowerShell Scripts ........................................................................................................................ 18 What is a PowerShell Script ................................................................................................... 18 Running Scripts from the Current Directory .......................................................................... 18 Running Scripts from a Different Directory ........................................................................... 19 Specifying Parameters (Arguments) when Running Scripts .................................................. 19 PowerShell Variables .................................................................................................................... 20 Variable Declaration and Naming .......................................................................................... 20 The $ Method of Declaring Variables and Viewing Variable Values .................................... 20 Declaring and Initializing Multiple Variables ........................................................................ 21 Assignment Operators ............................................................................................................. 22 Comparison Operators ............................................................................................................ 24 Get-Variable Cmdlet ............................................................................................................... 26 Set-Variable and New-Variable Cmdlets ................................................................................ 26 Basic PowerShell Scripting: Level 1 www.cetc.umsl.edu Remove-Variable Cmdlet ....................................................................................................... 32 Data Types .............................................................................................................................. 32 PowerShell Variables and the Read-Host Cmdlet .................................................................. 35 The .NET Framework Graphical of Getting User Input ......................................................... 35 Environment Variables ........................................................................................................... 36 Exercise 1 ...................................................................................................................................... 38 Literals .......................................................................................................................................... 39 String Literals .......................................................................................................................... 39 Special Characters (Escape Characters) .................................................................................. 42 Here-String String Literals ...................................................................................................... 43 SubString Method ................................................................................................................... 46 The Length Property ............................................................................................................... 47 Trimming Strings .................................................................................................................... 48 Numbers and Numeric Literals ............................................................................................... 49 Exercise 2 ...................................................................................................................................... 51 Conditional If Statement ............................................................................................................... 52 Exercise 3 ...................................................................................................................................... 56 Arrays or Lists............................................................................................................................... 57 Exercise 4 ...................................................................................................................................... 64 Hash Tables: Associative Arrays .................................................................................................. 65 Appendix A: Operators ................................................................................................................. 67 Appendix B: Aliases for Class Cmdlets........................................................................................ 72 Appendix C: Solutions to Exercises ............................................................................................. 73 Basic PowerShell Scripting: Level 1 www.cetc.umsl.edu .