17.8. Summary
Errors in Windows PowerShell are stored in the $Error variable. The default size is 256 errors. You can increase the size of $Error if desired.
Errors can be described as terminating errors and nonterminating errors. The distinction is not clear-cut.
The $ErrorActionPreference variable allows you to specify a global preference for PowerShell behavior when an error occurs.
The $Error View variable allows you to specify two views of error information.
Two of the common parameters are relevant to errors:
The -errorAction paramter overrides for an individual cmdlet the value in $ErrorActionPreference.
The -errorVariable parameter allows you to store error information in a variable other than $Error.
The write-error cmdlet allows you to create custom error messages.
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