How can I get the current PowerShell executing file? - powershell

Question

Note: PowerShell 1.0
I'd like to get the current executing PowerShell file name. That is, if I start my session like this:
powershell.exe .\myfile.ps1
I'd like to get the string ".\myfile.ps1" (or something like that). EDIT: "myfile.ps1" is preferable.
Any ideas?

Answer 1

I've tried to summarize the various answers here, updated for PowerShell 5:
If you're only using PowerShell 3 or higher, use $PSCommandPath
If want compatibility with older versions, insert the shim:
if ($PSCommandPath -eq $null) { function GetPSCommandPath() { return $MyInvocation.PSCommandPath; } $PSCommandPath = GetPSCommandPath }
This adds $PSCommandPath if it doesn't already exist.
The shim code can be executed anywhere (top-level or inside a function), though $PSCommandPath variable is subject to normal scoping rules (eg, if you put the shim in a function, the variable is scoped to that function only).
Details
There's 4 different methods used in various answers, so I wrote this script to demonstrate each (plus $PSCommandPath):
function PSCommandPath() { return $PSCommandPath }
function ScriptName() { return $MyInvocation.ScriptName }
function MyCommandName() { return $MyInvocation.MyCommand.Name }
function MyCommandDefinition() {
# Begin of MyCommandDefinition()
# Note: ouput of this script shows the contents of this function, not the execution result
return $MyInvocation.MyCommand.Definition
# End of MyCommandDefinition()
}
function MyInvocationPSCommandPath() { return $MyInvocation.PSCommandPath }
Write-Host ""
Write-Host "PSVersion: $($PSVersionTable.PSVersion)"
Write-Host ""
Write-Host "`$PSCommandPath:"
Write-Host " * Direct: $PSCommandPath"
Write-Host " * Function: $(PSCommandPath)"
Write-Host ""
Write-Host "`$MyInvocation.ScriptName:"
Write-Host " * Direct: $($MyInvocation.ScriptName)"
Write-Host " * Function: $(ScriptName)"
Write-Host ""
Write-Host "`$MyInvocation.MyCommand.Name:"
Write-Host " * Direct: $($MyInvocation.MyCommand.Name)"
Write-Host " * Function: $(MyCommandName)"
Write-Host ""
Write-Host "`$MyInvocation.MyCommand.Definition:"
Write-Host " * Direct: $($MyInvocation.MyCommand.Definition)"
Write-Host " * Function: $(MyCommandDefinition)"
Write-Host ""
Write-Host "`$MyInvocation.PSCommandPath:"
Write-Host " * Direct: $($MyInvocation.PSCommandPath)"
Write-Host " * Function: $(MyInvocationPSCommandPath)"
Write-Host ""
Output:
PS C:\> .\Test\test.ps1
PSVersion: 5.1.19035.1
$PSCommandPath:
* Direct: C:\Test\test.ps1
* Function: C:\Test\test.ps1
$MyInvocation.ScriptName:
* Direct:
* Function: C:\Test\test.ps1
$MyInvocation.MyCommand.Name:
* Direct: test.ps1
* Function: MyCommandName
$MyInvocation.MyCommand.Definition:
* Direct: C:\Test\test.ps1
* Function:
# Begin of MyCommandDefinition()
# Note this is the contents of the MyCommandDefinition() function, not the execution results
return $MyInvocation.MyCommand.Definition;
# End of MyCommandDefinition()
$MyInvocation.PSCommandPath:
* Direct:
* Function: C:\Test\test.ps1
Notes:
Executed from C:\, but actual script is C:\Test\test.ps1.
No method tells you the passed invocation path (.\Test\test.ps1)
$PSCommandPath is the only reliable way, but was introduced in PowerShell 3
For versions prior to 3, no single method works both inside and outside of a function

Answer 2

While the current Answer is right in most cases, there are certain situations that it will not give you the correct answer. If you use inside your script functions then:
$MyInvocation.MyCommand.Name
Returns the name of the function instead name of the name of the script.
function test {
$MyInvocation.MyCommand.Name
}
Will give you "test" no matter how your script is named.
The right command for getting the script name is always
$MyInvocation.ScriptName
this returns the full path of the script you are executing. If you need just the script filename than this code should help you:
split-path $MyInvocation.PSCommandPath -Leaf

Answer 3

If you only want the filename (not the full path) use this:
$ScriptName = $MyInvocation.MyCommand.Name

Answer 4

Try the following
$path = $MyInvocation.MyCommand.Definition
This may not give you the actual path typed in but it will give you a valid path to the file.

Answer 5

beware:
Unlike the $PSScriptRoot and $PSCommandPath automatic variables, the
PSScriptRoot and PSCommandPath properties of the $MyInvocation automatic
variable contain information about the invoker or calling script, not the
current script.
e.g.
PS C:\Users\S_ms\OneDrive\Documents> C:\Users\SP_ms\OneDrive\Documents\DPM ...
=!C:\Users\S_ms\OneDrive\Documents\DPM.ps1
...where DPM.ps1 contains
Write-Host ("="+($MyInvocation.PSCommandPath)+"!"+$PSCommandPath)

Answer 6

If you are looking for the current directory in which the script is being executed, you can try this one:
$fullPathIncFileName = $MyInvocation.MyCommand.Definition
$currentScriptName = $MyInvocation.MyCommand.Name
$currentExecutingPath = $fullPathIncFileName.Replace($currentScriptName, "")
Write-Host $currentExecutingPath

Answer 7

As noted in previous responses, using "$MyInvocation" is subject to scoping issues and doesn't necessarily provide consistent data (return value vs. direct access value). I've found that the "cleanest" (most consistent) method for getting script info like script path, name, parms, command line, etc. regardless of scope (in main or subsequent/nested function calls) is to use "Get-Variable" on "MyInvocation"...
# Get the MyInvocation variable at script level
# Can be done anywhere within a script
$ScriptInvocation = (Get-Variable MyInvocation -Scope Script).Value
# Get the full path to the script
$ScriptPath = $ScriptInvocation.MyCommand.Path
# Get the directory of the script
$ScriptDirectory = Split-Path $ScriptPath
# Get the script name
# Yes, could get via Split-Path, but this is "simpler" since this is the default return value
$ScriptName = $ScriptInvocation.MyCommand.Name
# Get the invocation path (relative to $PWD)
# #GregMac, this addresses your second point
$InvocationPath = ScriptInvocation.InvocationName
So, you can get the same info as $PSCommandPath, but a whole lot more in the deal. Not sure, but it looks like "Get-Variable" was not available until PS3 so not a lot of help for really old (not updated) systems.
There are also some interesting aspects when using "-Scope" as you can backtrack to get the names, etc. of the calling function(s). 0=current, 1=parent, etc.
Hope this is somewhat helpful.
Ref, https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/get-variable

Answer 8

I would argue that there is a better method, by setting the scope of the variable $MyInvocation.MyCommand.Path:
ex> $script:MyInvocation.MyCommand.Name
This method works in all circumstances of invocation:
EX:
Somescript.ps1
function printme () {
"In function:"
( "MyInvocation.ScriptName: " + [string]($MyInvocation.ScriptName) )
( "script:MyInvocation.MyCommand.Name: " + [string]($script:MyInvocation.MyCommand.Name) )
( "MyInvocation.MyCommand.Name: " + [string]($MyInvocation.MyCommand.Name) )
}
"Main:"
( "MyInvocation.ScriptName: " + [string]($MyInvocation.ScriptName) )
( "script:MyInvocation.MyCommand.Name: " + [string]($script:MyInvocation.MyCommand.Name) )
( "MyInvocation.MyCommand.Name: " + [string]($MyInvocation.MyCommand.Name) )
" "
printme
exit
OUTPUT:
PS> powershell C:\temp\test.ps1
Main:
MyInvocation.ScriptName:
script:MyInvocation.MyCommand.Name: test.ps1
MyInvocation.MyCommand.Name: test.ps1
In function:
MyInvocation.ScriptName: C:\temp\test.ps1
script:MyInvocation.MyCommand.Name: test.ps1
MyInvocation.MyCommand.Name: printme
Notice how the above accepted answer does NOT return a value when called from Main. Also, note that the above accepted answer returns the full path when the question requested the script name only. The scoped variable works in all places.
Also, if you did want the full path, then you would just call:
$script:MyInvocation.MyCommand.Path

Answer 9

A short demonstration of #gregmac's (excellent and detailed) answer, which essentially recommends $PSCommandPath as the only reliable command to return the currently running script where Powershell 3.0 and above is used.
Here I show returning either the full path or just the file name.
Test.ps1:
'Direct:'
$PSCommandPath # Full Path
Split-Path -Path $PSCommandPath -Leaf # File Name only
function main () {
''
'Within a function:'
$PSCommandPath
Split-Path -Path $PSCommandPath -Leaf
}
main
Output:
PS> .\Test.ps1
Direct:
C:\Users\John\Documents\Sda\Code\Windows\PowerShell\Apps\xBankStatementRename\Test.ps1
Test.ps1
Within a function:
C:\Users\John\Documents\Sda\Code\Windows\PowerShell\Apps\xBankStatementRename\Test.ps1
Test.ps1

Answer 10

Did some testing with the following script, on both PS 2 and PS 4 and had the same result. I hope this helps people.
$PSVersionTable.PSVersion
function PSscript {
$PSscript = Get-Item $MyInvocation.ScriptName
Return $PSscript
}
""
$PSscript = PSscript
$PSscript.FullName
$PSscript.Name
$PSscript.BaseName
$PSscript.Extension
$PSscript.DirectoryName
""
$PSscript = Get-Item $MyInvocation.InvocationName
$PSscript.FullName
$PSscript.Name
$PSscript.BaseName
$PSscript.Extension
$PSscript.DirectoryName
Results -
Major Minor Build Revision
----- ----- ----- --------
4 0 -1 -1
C:\PSscripts\Untitled1.ps1
Untitled1.ps1
Untitled1
.ps1
C:\PSscripts
C:\PSscripts\Untitled1.ps1
Untitled1.ps1
Untitled1
.ps1
C:\PSscripts

Answer 11

This can works on most powershell versions:
(& { $MyInvocation.ScriptName; })
This can work for Scheduled Job
Get-ScheduledJob |? Name -Match 'JOBNAMETAG' |% Command