17.4. Using the $ErrorActionPreference variable
The $ErrorActionPreference variable specifies the action to take in response to an error occurring. The following values are supported:
SilentlyContinue — Don't display an error message continue to execute subsequent commands.
Continue — Display any error message and attempt to continue execution of subsequence commands.
Inquire — Prompts the user whether to continue or terminate the action
Stop — Terminate the action with error.
Set the $ErrorActionPreference variable to SilentlyContinue by using this command:
$ErrorActionPreference = "SilentlyContinue"
As you can see in Figure 17-13, the ForLoop.ps1 script runs to completion without displaying any error message. The error message is available in $Error if you want to see it.
Figure 17.13. Figure 17-13
The default value of $ErrorActionPreference is Continue. When that is the setting, the appearance when running ForLoop.ps1 is the same as that shown in Figure 17-1.
When you set the value of $ErrorActionPreference to Inquire, execution stops when the error occurs, the error is described, and the user is prompted to decide what to do next:
Action to take for this exception: Attempted to divide by zero. [C] Continue [I] Silent Continue [B] Break [S] Suspend [?] Help (default is "C"):
Figure 17-14 shows the results of executing ForLoop.ps1 with $ErrorActionPreference set to Inquire ...