PowerShell/Scripts/list-automatic-variables.ps1

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<#
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.SYNOPSIS
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Lists all automatic variables of PowerShell
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.DESCRIPTION
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This script lists all automatic variables of PowerShell.
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.EXAMPLE
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PS> ./list-automatic-variables
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Variable Content
-------- -------
$false False
$HOME C:\Users\Markus
...
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.NOTES
Author: Markus Fleschutz · License: CC0
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.LINK
https://github.com/fleschutz/PowerShell
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#>
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function AddItem { param([string]$Variable, [string]$Content)
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new-object PSObject -property @{ 'Variable' = "$Variable"; 'Content' = "$Content" }
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}
function ListAutomaticVariables {
AddItem "`$args" "$args"
AddItem "`$ConsoleFileName" "$ConsoleFileName"
AddItem "`$Error[0]" "$($Error[0])"
AddItem "`$Event" "$Event"
AddItem "`$EventArgs" "$EventArgs"
AddItem "`$EventSubscriber" "$EventSubscriber"
AddItem "`$ExecutionContext" "$ExecutionContext"
AddItem "`$false" "$false"
AddItem "`$foreach" "$foreach"
AddItem "`$HOME" "$HOME"
AddItem "`$input" "$input"
AddItem "`$IsCoreCLR" "$IsCoreCLR"
AddItem "`$IsLinux" "$IsLinux"
AddItem "`$IsMacOS" "$IsMacOS"
AddItem "`$IsWindows" "$IsWindows"
AddItem "`$LastExitCode" "$LastExitCode"
AddItem "`$Matches" "$Matches"
AddItem "`$MyInvocation.PSScriptRoot" "$($MyInvocation.PSScriptRoot)"
AddItem "`$MyInvocation.PSCommandPath" "$($MyInvocation.PSCommandPath)"
AddItem "`$NestedPromptLevel" "$NestedPromptLevel"
AddItem "`$null" "$null"
AddItem "`$PID" "$PID"
AddItem "`$PROFILE" "$PROFILE"
AddItem "`$PSBoundParameters" "$PSBoundParameters"
AddItem "`$PSCmdlet" "$PSCmdlet"
AddItem "`$PSCommandPath" "$PSCommandPath"
AddItem "`$PSCulture" "$PSCulture"
AddItem "`$PSDebugContext" "$PSDebugContext"
AddItem "`$PSHOME" "$PSHOME"
AddItem "`$PSItem" "$PSItem"
AddItem "`$PSScriptRoot" "$PSScriptRoot"
AddItem "`$PSSenderInfo" "$PSSenderInfo"
AddItem "`$PSUICulture" "$PSUICulture"
AddItem "`$PSVersionTable.PSVersion" "$($PSVersionTable.PSVersion)"
AddItem "`$PSVersionTable.PSEdition" "$($PSVersionTable.PSEdition)"
AddItem "`$PSVersionTable.GitCommitId" "$($PSVersionTable.GitCommitId)"
AddItem "`$PSVersionTable.OS" "$($PSVersionTable.OS)"
AddItem "`$PSVersionTable.Platform" "$($PSVersionTable.Platform)"
AddItem "`$PSVersionTable.PSCompatibleVersions" "$($PSVersionTable.PSCompatibleVersions)"
AddItem "`$PSVersionTable.PSRemotingProtocolVersion" "$($PSVersionTable.PSRemotingProtocolVersion)"
AddItem "`$PSVersionTable.SerializationVersion" "$($PSVersionTable.SerializationVersion)"
AddItem "`$PSVersionTable.WSManStackVersion" "$($PSVersionTable.WSManStackVersion)"
AddItem "`$PWD" "$PWD"
AddItem "`$Sender" "$Sender"
AddItem "`$ShellId" "$ShellId"
AddItem "`$StackTrace" "$StackTrace"
AddItem "`$switch" "$switch"
AddItem "`$this" "$this"
AddItem "`$true" "$true"
}
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try {
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ListAutomaticVariables | format-table -property Variable,Content
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exit 0 # success
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} catch {
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"⚠️ Error: $($Error[0]) ($($MyInvocation.MyCommand.Name):$($_.InvocationInfo.ScriptLineNumber))"
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exit 1
}