PowerShell preferences:
Variable Default Value Options
-------- ------------- --------------------------------
$ConfirmPreference High (none | low | medium | high)
$DebugPreference SilentlyContinue (Write-Debug) (stop | Inquire | continue | SilentlyContinue)
$ErrorActionPreference Continue (Write-Error) (stop | Inquire | continue | SilentlyContinue)
$ErrorView NormalView (NormalView | CategoryView)
$FormatEnumerationLimit 4
$LogCommandHealthEvent False (not logged)
$LogCommandLifecycleEvent False (not logged)
$LogEngineHealthEvent True (logged)
$LogEngineLifecycleEvent True (logged)
$LogProviderLifecycleEvent True (logged)
$LogProviderHealthEvent True (logged)
$MaximumAliasCount 4096 Max no. of aliases available to the session. Valid values: 1024-32768
$MaximumDriveCount 4096 Max no. of drives available, excluding those provided by the OS.
$MaximumErrorCount 256 Valid values: 256 - 32768
$MaximumFunctionCount 4096 Max no. of functions available to the session.
$MaximumHistoryCount 64 Max no. of entries saved in the command history. Valid values: 1-32768
$MaximumVariableCount 4096 Max no. of variables available to the session.
$OFS Space " " Output Field Separator (converting an array to string.)
$OutputEncoding ASCIIEncoding object
Valid values: Objects derived from an Encoding class, such as:
ASCIIEncoding, SBCSCodePageEncoding, UTF7Encoding,
UTF8Encoding, UTF32Encoding, and UnicodeEncoding.
$ProgressPreference Continue (stop | Inquire | continue | SilentlyContinue)
$PSEmailServer (None)
$PSModuleAutoloading Import installed modules automatically.
$PSSessionApplicationName WSMAN
$PSSessionConfigurationName http://schemas.microsoft.com/powershell/microsoft.powershell
$PSSessionOption (See below)
$VerbosePreference SilentlyContinue (Write-Verbose) (stop | Inquire | continue | SilentlyContinue)
$WarningPreference Continue (Write-Warning) (stop | Inquire | continue | SilentlyContinue)
$WhatIfPreference 0
Examples
Display the value of the $ConfirmPreference variable.
PS C:\> $ConfirmPreference
High
Assign the value "Medium" to the $ConfirmPreference variable.
PS C:\> $ConfirmPreference = "Medium"
Setting $OFS (the Output Field Separator) to display an array with different separators:
PS C:\> &{ $a = 1,2,3; "$a"} 1 2 3 PS C:\> &{ $OFS="-"; $a = 1,2,3; "$a"} 1-2-3
"Democracy cannot be static. Whatever is static is dead" ~ Eleanor Roosevelt
Related:
Variables - Environment variables
Automatic variables - Variables created and maintained by PowerShell $_, $Args, $Error, $Home etc
Array Variables