February 2019
Intermediate to advanced
626 pages
15h 51m
English
Content preview from Mastering Windows PowerShell Scripting - Third Edition
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Error records
When an error is raised in PowerShell, an ErrorRecord object is created (explicitly or implicitly).
An ErrorRecord object contains a number of fields that are useful for diagnosing an error. ErrorRecord can be explored using Get-Member. For example, an ErrorRecord will be generated when attempting to divide by 0:
100 / 0 $record = $Error[0]
The ErrorRecord object that was generated includes ScriptStackTrace. ScriptTrackTrace is extremely useful when debugging problems in larger scripts:
PS> $record.ScriptStackTraceat <ScriptBlock>, <No file>: line 1
The Exception in the error record also includes a .NET stack trace:
PS> $record.Exception.StackTraceat System.Management.Automation.IntOps.Divide(Int32 lhs, Int32 rhs)at System.Dynamic.UpdateDelegates.UpdateAndExecute2[T0,T1,TRet](CallSite ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.