windows powershell programming scripting error handling and debugging

... have a random( ) subroutine that returns a random number, and you have the following script: use vars qw($num); $num ||= random( ); print ++$num; 596 | Chapter 21: Error Handling and Debugging ... `PerlPostReadRequestHandler' push_handlers( ) stack is empty PerlPostReadRequestHandler handlers returned `PerlTransHandler' push_handlers( ) stack is empty PerlTransHandler handlers returned -1 `PerlInitHandler' ... `PerlHandler' push_handlers( ) stack is empty PerlHandler handlers returned `PerlLogHandler' push_handlers( ) stack is empty PerlLogHandler handlers returned -1 running registered cleanup handlers...

Ngày tải lên: 24/10/2013, 08:15

... Windows PowerShell host interfaces and using the Windows PowerShell Runspace and Pipeline APIs to invoke commands Together, these two interfaces enable communication between the application and ... Microsoft .PowerShell. Core PSVersion : 1.0 Description : This Windows PowerShell snap-in contains Windows PowerShell management cmdlets used to manage components of Windows PowerShell Name : Microsoft .PowerShell. Host ... Description : This Windows PowerShell snap-in contains cmdlets used by the Windows PowerShell host Name PSVersion Description age Windows : Microsoft .PowerShell. Management : 1.0 : This Windows PowerShell...

Ngày tải lên: 13/12/2013, 02:16

... Windows PowerShell Cmdlets High-Level Architecture of Windows PowerShell Host Application Windows PowerShell Engine Windows PowerShell Snap-ins 2 2 3 9 10 10 Summary 11 Chapter 2: Extending Windows ... commands and scripts, and is therefore easy to adopt It is an easy to use shell and language for administrators All commands in PowerShell are called cmdlets (pronounced ‘‘commandlet’’), and ... Extending Windows PowerShell 13 Types of PowerShell Snap-ins Creating a Standard PowerShell Snap-in 13 14 Writing a PowerShell Snap-in Registering Your PowerShell Snap-in Listing Available PowerShell...

Ngày tải lên: 13/12/2013, 02:16

... Windows PowerShell Cmdlets High-Level Architecture of Windows PowerShell Host Application Windows PowerShell Engine Windows PowerShell Snap-ins 2 2 3 9 10 10 Summary 11 Chapter 2: Extending Windows ... commands and scripts, and is therefore easy to adopt It is an easy to use shell and language for administrators All commands in PowerShell are called cmdlets (pronounced ‘‘commandlet’’), and ... Windows PowerShell host interfaces and using the Windows PowerShell Runspace and Pipeline APIs to invoke commands Together, these two interfaces enable communication between the application and...

Ngày tải lên: 27/06/2014, 12:20

... Windows PowerShell Cmdlets High-Level Architecture of Windows PowerShell Host Application Windows PowerShell Engine Windows PowerShell Snap-ins 2 2 3 9 10 10 Summary 11 Chapter 2: Extending Windows ... commands and scripts, and is therefore easy to adopt It is an easy to use shell and language for administrators All commands in PowerShell are called cmdlets (pronounced ‘‘commandlet’’), and ... Windows PowerShell host interfaces and using the Windows PowerShell Runspace and Pipeline APIs to invoke commands Together, these two interfaces enable communication between the application and...

Ngày tải lên: 12/08/2014, 23:21

... you how to create and use a standard PowerShell snap-in, and then we explain when you need to use a custom PowerShell snap-in and how to implement and use it Note, however, that PowerShell built-in ... metadata, and so on A Windows PowerShell snap-in is a NET assembly that contains cmdlets, providers, and so on Windows PowerShell comes with a set of basic snap-ins that offer all the basic cmdlets and ... Microsoft .PowerShell. Host, cannot be removed Page 13 Kumaravel c02.tex V2 - 01/07/2008 Chapter 2: Extending Windows PowerShell Creating a Standard PowerShell Snap-in You can extend Windows PowerShell...

Ngày tải lên: 12/08/2014, 23:21

... Initialization Errors Errors in loading a typexml file should work like other PowerShell errors If processing can continue, then it is a nonfatal error and it would call WriteDebug (because there’s no Error ... command is a standalone executable Developing traditional command executables involves the following tasks: ❑ Parsing command lines, which normally includes command name, command parameter, and ... command elements, which includes the following: ❑ Command name: The first token of the command line ❑ Command parameters: Command elements starting with a hyphen (-) ❑ Command arguments: Command...

Ngày tải lên: 12/08/2014, 23:21

... ... Developing Cmdlets ...

Ngày tải lên: 12/08/2014, 23:21

... shifting between drives Error Handling Instead of using exceptions for handling errors, provider developers must create ErrorRecord objects and pass them to one of the error- handling methods defined ... understand the different ways to handle errors in your provider code Very similar to error handling in cmdlets, there are two main APIs to use for handling errors: ❑ ThrowTerminatingError(ErrorRecord): ... handle errors Errors should be handled by creating an instance of the ErrorRecord class and then calling either WriteError() or ThrowTerminatingError() Which method you should use to pass your ErrorRecord...

Ngày tải lên: 12/08/2014, 23:21

... an object representation of a PowerShell command line, containing individual commands and their parameters and exposing entry points and a set of input, output, and error pipes Page 165 Kumaravel ... a command has an output stream and an error stream PowerShell follows this model, and a PowerShell pipeline has an output pipe and an error pipe If you use the PowerShell engine API to invoke ... Hosting the PowerShell Engine in Applications Handling Terminating Errors In the style of traditional Unix and DOS command-line applications, PowerShell pipelines output non-terminating error information...

Ngày tải lên: 12/08/2014, 23:21

... writeerror $_; start-sleep 1}"); // Read output and error until the pipeline finishes pipeline.InvokeAsync(); WaitHandle[] handles = new WaitHandle[2]; handles[0] = pipeline.Output.WaitHandle; handles[1] ... command and add the // ’path’ and ’recurse’ parameters Command dirCommand = new Command("get-childitem"); dirCommand.Parameters.Add("path", "hklm:\\software\\microsoft\ \PowerShell" ); dirCommand.Parameters.Add("recurse"); ... merge the first command’s error output into the input of the second command, as shown here: Command commandOne = new Command("dir"); commandOne.MergeMyResults(PipelineResultTypes .Error, PipelineResultTypes.Output);...

Ngày tải lên: 12/08/2014, 23:21

... PSHostUserInterface, and PSHostRawUserInterface classes to get different forms of data from the Windows PowerShell engine The Windows PowerShell s pipeline supports only input, error, and output data ... running, all errors are routed through the error stream However, when the Windows PowerShell engine is starting up (Runspace.Open()) there is no pipeline associated with it and hence no error stream ... installation of PowerShell They are located in \%windir\%\system32\ windowspowershell\v1.0 The following is a command to list the format files included with PowerShell: PS C:\Documents and Settings\Owner>...

Ngày tải lên: 12/08/2014, 23:21

... Boolean Enables debugging ErrorAction Enum Tells the command what to on error (e.g., stop, inquire) ErrorVariable String Identifies a variable in which to place the command’s error object Page ... create and those provided by Windows PowerShell and others The following lists of verbs are officially recommended by Microsoft For the latest information, please refer to documents in the PowerShell ... when it is deleted Errors String Name of the variable in which error records will be stored ErrorLevel Int32 Level of problem to report ErrorLimit Int32 Maximum number of errors that should occur...

Ngày tải lên: 12/08/2014, 23:21

... shouldProcessReason ); / /PowerShell provider should call this method when encounter //a fatal error Call WriteError method for nonfatal error public void ThrowTerminatingError( ErrorRecord errorRecord ); ... retrieving non-terminating errors from, 173 using RunspaceInvoke with, 167–168 ErrorDetails class, 95–96 ErrorRecord objects handling provider errors, 121–122 non-terminating errors returned as, 173 ... practices for, 115 DriveCmdletProvider and, 140 handling provider errors, 122 reporting non-terminating errors with, 97 writing to error stream with, 207 WriteErrorLine( )method, PSHostUserInterface...

Ngày tải lên: 12/08/2014, 23:21

... Exception Handling: try…catch finally Exception Handling: try…catch try{ // code that may cause exception } catch ( ExceptionTypeA e ){ // statement to handle errors occurring // in ... > 0) errorProvider1.SetError(txtX, ""); else { errorProvider1.SetError(txtX, "Please enter a value > 0"); txtX.Focus(); // e.Cancel = true; } } catch (Exception ex) { errorProvider1.SetError(txtX, ... FormatException error ) { MessageBox.Show( error. Message, "Invalid Operation", MessageBoxButtons.OK, MessageBoxIcon .Error ); } // BẮT lỗi nhập số âm catch ( NegativeNumberException error ) { MessageBox.Show(...

Ngày tải lên: 13/05/2014, 11:30

... behind my back, and landed on layouts for the full screen, portrait, snap, and fill view states as shown in Figure 2-7 and Figure 2-8 FIGURE 2-7 Full-screen landscape and filled (landscape) wireframe ... the app For full details, see HTML and DOM API changes list and HTML, CSS, and JavaScript features and differences on the Windows Developer Center, http://dev .windows. com As with the app manifest, ... 279 Flyout Examples 280 Menus and Menu Commands 283 Message Dialogs 288 Improving Error Handling in Here My Am! 289 What We’ve...

Ngày tải lên: 06/03/2014, 18:20

... behind my back, and landed on layouts for the full screen, portrait, snap, and fill view states as shown in Figure 2-7 and Figure 2-8 FIGURE 2-7 Full-screen landscape and filled (landscape) wireframe ... the app For full details, see HTML and DOM API changes list and HTML, CSS, and JavaScript features and differences on the Windows Developer Center, http://dev .windows. com As with the app manifest, ... 279 Flyout Examples 280 Menus and Menu Commands 283 Message Dialogs 288 Improving Error Handling in Here My Am! 289 What We’ve...

Ngày tải lên: 08/03/2014, 18:20

... CHAPTER 6: HANDLING DATA, FILES, AND NETWORKING Getting Started with Data, Files, and Networking Handling Application Data and Files Getting Started with the Data Samples App Understanding Windows. Storage ... System.Linq; Windows. Foundation; Windows. Foundation.Collections; Windows. UI.Xaml; Windows. UI.Xaml.Controls; Windows. UI.Xaml.Controls.Primitives; Windows. UI.Xaml.Data; Windows. UI.Xaml.Input; Windows. UI.Xaml.Media; ... in Windows Phone and ultimately across the entire Windows product line with the release of Windows FIGURE 1-1 c01.indd 11/27/2012 4:30:44 PM What Makes Windows Different? ❘ Understanding Windows...

Ngày tải lên: 15/03/2014, 11:13

... behind my back, and landed on layouts for the full screen, portrait, snap, and fill view states as shown in Figure 2-7 and Figure 2-8 FIGURE 2-7 Full-screen landscape and filled (landscape) wireframe ... the app For full details, see HTML and DOM API changes list and HTML, CSS, and JavaScript features and differences on the Windows Developer Center, http://dev .windows. com As with the app manifest, ... 279 Flyout Examples 280 Menus and Menu Commands 283 Message Dialogs 288 Improving Error Handling in Here My Am! 289 What We’ve...

Ngày tải lên: 17/03/2014, 12:20

... behind my back, and landed on layouts for the full screen, portrait, snap, and fill view states as shown in Figure 2-7 and Figure 2-8 43 FIGURE 2-7 Full-screen landscape and filled (landscape) wireframe ... the web For full details, see HTML and DOM API changes list and HTML, CSS, and JavaScript features and differences on the Windows Developer Center, http://dev .windows. com Like the manifest, you ... understanding available to many more developers, including you! What You'll Need To work through this book, you should download and install the Windows Release Preview along with the Windows SDK and...

Ngày tải lên: 24/03/2014, 04:21