Pro Windows PowerShell

Pro Windows PowerShell......Page 1
Contents at a Glance......Page 6
Contents......Page 9
About the Author......Page 19
About the Technical Reviewer......Page 21
Acknowledgments......Page 23
 What’s in This Book?......Page 25
 Do I Need Prior Programming Experience?......Page 26
 The Extended Type System......Page 27
  Using Object Methods......Page 28
   ManagementObjectAdapter......Page 29
   DataRowAdapter......Page 30
  Type Extensions......Page 31
  Strings and String Operations......Page 34
   String Literals......Page 35
   String Interpolation......Page 37
   Productivity Boosting String Operators......Page 38
   Regular Expression Matching......Page 39
   System.Int32......Page 40
   Hexadecimal Numbers......Page 41
  Arrays and Collections......Page 42
  Dictionaries and Hash Tables......Page 47
 Type Literals......Page 51
  Type Conversion......Page 52
   Built-in Type Conversion Rules......Page 53
  Accessing Static Members......Page 56
 Summary......Page 57
 Conditional Expressions......Page 59
  Comparing Values......Page 60
  Implicit Type Conversions......Page 62
   -or......Page 63
   -not......Page 64
  Boolean Conversions......Page 67
  The Power of String Conversions......Page 68
  Collections and Conditional Expressions......Page 69
  Simple Branching: if/else......Page 70
  Multiple Branches and the switch Statement......Page 71
  The Simplest Loop: while......Page 74
  Executing Actions on All Objects in a Collection: The foreach Loop......Page 76
  Controlling Loop Execution: break and continue Statements......Page 77
 Summary......Page 80
 Text-Based Pipelines......Page 81
 Object-Based Pipelines......Page 82
 Processing Collections Using ForEach-Object......Page 85
 Adding or Deleting Properties Using Select-Object......Page 86
 Sorting Collections......Page 88
 Pipeline Tees......Page 89
 Grouping Objects......Page 90
 Detecting Changes and Differences Among Objects......Page 91
 The Object Pipeline and Functional Programming......Page 92
 Summary......Page 93
 Defining Script Blocks......Page 95
 Passing Parameters and Returning Values......Page 97
 Processing Pipeline Input......Page 101
  Variable Scope......Page 103
 Invoking Strings as Expressions......Page 109
 Script Blocks as Delegates......Page 111
 Summary......Page 112
 Defining Functions......Page 113
  Function Internals......Page 114
  Function Parameters......Page 115
  Passing Parameters by Reference......Page 117
  Returning Values......Page 119
  Scoping Rules......Page 120
 Filters......Page 123
  Implementing New Control Structures......Page 127
  Script Blocks as Strategies......Page 130
 Summary......Page 132
 Working with Aliases......Page 133
   Get-Alias......Page 134
   The Alias Provider......Page 135
  Modifying Aliases......Page 136
  Exporting and Importing Aliases......Page 137
  Name Clashes......Page 141
  Complex Aliases......Page 143
  Removing Broken Aliases......Page 144
 Built-in Aliases......Page 145
  cmd.exe Look-alikes......Page 146
  UNIX Look-alikes......Page 147
  Convenience Aliases......Page 149
 Summary......Page 151
 Enumerating Providers......Page 153
 Drives......Page 155
  Drive Scope......Page 157
 Navigating to Drives......Page 158
  Item Providers......Page 160
  Item Container Providers......Page 161
  Item Property Providers......Page 162
 Summary......Page 163
 Creating Scripts......Page 165
  Invoking Scripts......Page 166
  Passing Parameters......Page 168
  Returning Values......Page 172
 Executing PowerShell Scripts from Other Environments......Page 174
 Developing and Maintaining Script Libraries......Page 175
  The Library Path Problem......Page 176
 Summary......Page 180
 Handling Errors......Page 181
  Common Error-Handling Parameters......Page 183
  Trapping Errors......Page 186
   Suppressing Errors and Raising Them Again......Page 187
   Catching Unknown Errors or All Errors......Page 189
   Errors That Cannot Be Trapped......Page 195
  Capturing Nonterminating Errors......Page 196
   Raising Terminating Errors......Page 198
   Raising Nonterminating Errors......Page 201
 Debugging Your Code......Page 203
  Print Debugging......Page 204
   Generating Verbose Output......Page 206
   Generating Debug Output......Page 209
   Generating Warnings......Page 212
   Controlling Error Output......Page 213
  Stepping Through Scripts and Breaking Execution......Page 214
   Simulating Breakpoints......Page 215
   Tracing Intrinsic Shell Operations......Page 216
   Operation-Specific Tracing......Page 219
 Summary......Page 222
 How Code Signing Works......Page 223
  Certifying the Origin of a Script......Page 224
 Managing Certificates......Page 225
  Creating a Certification Authority Certificate......Page 228
  Issuing a Code-Signing Certificate......Page 232
 Signing Scripts......Page 237
 Running Scripts on Other Machines......Page 241
 Summary......Page 243
 Shell Hosts......Page 245
  Settings for All Users and All Shells......Page 249
  Settings for a Specific User and a Specific Shell......Page 250
 Working with Saved Console Settings......Page 252
 Changing the Prompt Settings......Page 254
 Tab Expansion: How Command Completion Works......Page 257
 Summary......Page 261
 Modifying Objects and Types......Page 263
  Adding Members to Single Objects......Page 264
   Creating New Objects......Page 266
  Adding Members to All Instances of a Class......Page 270
 Extending Object Formatting......Page 273
  Creating Our Own Views......Page 275
 Summary......Page 278
 The Help System......Page 279
  The Basics......Page 280
  Parameter Details......Page 282
  Advanced Techniques......Page 284
 Getting Command Information......Page 290
 Getting Information About Objects......Page 292
 Using the Internet to Get Help......Page 294
 Summary......Page 299
 Working with Processes......Page 301
  Listing Processes: Getting the Big Picture......Page 302
  Starting and Stopping Processes......Page 303
  Processes and Their Windows......Page 304
  Process Modules: On What Libraries Does This Baby Depend?......Page 305
  Setting Process Priority......Page 306
 Administering Services......Page 307
  Starting and Stopping Services......Page 308
  Analyzing Service Dependencies......Page 309
 Summary......Page 310
 Reading Content......Page 311
 Writing Content......Page 314
 Content Encoding......Page 315
  Getting Byte Content......Page 316
  Different Unicode Encodings......Page 317
  Finding Matches for a Regular Expression......Page 320
  Finding String Occurrences Inside Files......Page 321
 Summary......Page 322
 Working with the Windows Event Log......Page 323
  Reading from the System Event Logs......Page 324
   Accessing Remote Event Logs......Page 327
  Writing to the Event Log......Page 328
 Performance Counters......Page 332
  Consuming Counter Data......Page 333
   Detecting Memory Leaks......Page 335
   Detecting Hung Programs......Page 336
   Detecting Unexpected Program Exits......Page 338
 Summary......Page 339
 Laying the Foundation......Page 341
  Fetching Files from the Web......Page 342
  Setting Connection Options and Debugging Connection Problems......Page 344
   Working with Proxy Servers......Page 345
   Working with Request Headers......Page 348
   Accessing Resources Requiring Authentication......Page 350
  Test-Url: Verifying a Page’s Existence......Page 354
  Checking If a Page Contains Broken Links......Page 356
 Working with News Feeds......Page 358
  Getting Feeds......Page 359
  Calling Web Services Using HTTP GET Requests......Page 364
  Calling Web Services Using HTTP POST Requests......Page 366
  Calling Web Services Using the SOAP Protocol......Page 368
  Downloading Files from an FTP Server......Page 371
  Uploading Files to an FTP Server......Page 372
 Summary......Page 373
 Using System.Net.Mail......Page 375
 Building a Reusable Script......Page 376
 Configuring Recipients......Page 378
 Working with Message Headers......Page 381
  Message Views......Page 383
  Attaching Files to Messages......Page 385
  Embedding Media in Messages......Page 387
 Putting It All Together......Page 389
 Summary......Page 391
Talking to COM Objects......Page 393
 How PowerShell Supports COM......Page 394
  Automating Microsoft Word......Page 395
   Opening Documents and Extracting Text......Page 396
   Creating and Modifying Documents......Page 399
   Using Microsoft Word’s Spell Checker......Page 402
   Getting Help and Going Further......Page 403
   Reading Cell Values from a Document......Page 404
   Modifying Workbook Content......Page 408
   Going Further......Page 409
   Scripting a Browser Session......Page 410
   Extracting Data from the DOM Tree......Page 413
 Windows Script Host Code Interoperability......Page 415
  Evaluating Code......Page 416
  Exposing Objects from MSScriptControl......Page 418
 Summary......Page 419
 A Brief History of WMI......Page 421
  The Common Information Model......Page 422
  Object Discovery......Page 423
 PowerShell’s WMI Support......Page 424
  Get-WmiObject: The WMI Query Tool......Page 425
 Language Support for WMI Objects......Page 427
  Getting a List of Classes and Namespaces......Page 430
  WMI System Properties......Page 432
 Querying Hardware Devices......Page 433
  Operating System Updates......Page 434
  Installed Programs......Page 435
 Generating WMI Code......Page 437
  Scriptomatic......Page 438
 Summary......Page 440
 Installation and Configuration......Page 443
  Editing Configuration Files......Page 444
  Getting Help......Page 445
  Navigation Helpers......Page 447
  NTFS Helpers......Page 448
  Compressing and Archiving Files......Page 450
 Network Utilities......Page 451
 Executing Processes and Commands......Page 453
 XML Tools......Page 456
 Working with Image Files......Page 461
 Clipboard Helpers......Page 463
  Reading from the .NET Global Assembly Cache......Page 466
  Exploiting the Internet Explorer Feed Store......Page 467
  Manipulating Windows Active Directory......Page 469
 Utility Applications......Page 472
 Summary......Page 474
 Introducing PSEventing......Page 475
 Event-Handling Mechanics......Page 476
 FileSystemWatcher: A Real-World Example......Page 477
 Monitoring Entries Written to the System Event Logs......Page 478
 Handling WMI Events......Page 480
 Detecting If Our Script Has Been Terminated by the User......Page 482
 Using Script Blocks As Event Handlers......Page 483
 Summary......Page 485
Enhancing Tab Completion with PowerTab......Page 487
 Installation......Page 488
 How PowerTab Works......Page 489
  Data Grid Pop-up Windows......Page 492
 Configuring PowerTab......Page 493
  The IntelliSense Completion Handler......Page 494
  The Tab Expansion Database......Page 496
 Summary......Page 497
Index......Page 499