How to start PowerShell script from BAT file with

Question

I'm trying to create bat script that can start PowerShell script named the same as bat file in proper working directotry.

This is what I got:

@ECHO OFF
PowerShell.exe -NoProfile -Command "& {Start-Process PowerShell.exe -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""%~dpn0.ps1""' -WorkingDirectory '%~dp0' -Verb RunAs}"
PAUSE

Passing working directory this way does not work.

How to make script that will pass proper working directroy and also command line arguments?

Answer 1

A workaround is to let the PowerShell script change the directory to it's own origin with:

Set-Location (Split-Path $MyInvocation.MyCommand.Path) 

as the first command.

As per mklement0s hint: In PSv3+ use the simpler:

Set-Location -LiteralPath $PSScriptRoot

Or use this directory to open adjacent files.

$MyDir = Split-Path $MyInvocation.MyCommand.Path
$Content = Get-Content (Join-Path $MyDir OtherFile.txt)

Answer 2

The -WorkingDirectory parameter doesn't work when using -Verb RunAs. Instead, you have to set the working directory by calling cd within a -Command string.

This is what I use: (cmd/batch-file command)

powershell -command "   Start-Process PowerShell -Verb RunAs \""-Command `\""cd '%cd%'; & 'PathToPS1File';`\""\""   "

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If you want to make a "Run script as admin" right-click command in Windows Explorer, create a new registry key at HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\Shell\Run with PowerShell (Admin)\Command, and set its value to the command above -- except replacing %cd% with %W, and PathToPS1File with %1 (if you want it to execute the right-clicked file).

Result: (Windows Explorer context-menu shell command)

powershell -command "   Start-Process PowerShell -Verb RunAs \""-Command `\""cd '%W'; & '%1';`\""\""   "

EDIT: There's an alternative way to have the script be run as admin from Explorer, by using the "runas" sub-key: https://winaero.com/blog/run-as-administrator-context-menu-for-power-shell-ps1-files

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If you want to run your script as admin from an existing powershell, remove the outer powershell call, replace %W with $pwd, replace %1 with the ps1 file-path, and replace each \"" with just ".

Note: The \""'s are just escaped quotes, for when calling from the Windows shell/command-line (it's quote-handling is terrible). In this particular case, just \" should also work, but I use the more robust \"" for easier extension.

See here for more info: https://stackoverflow.com/a/31413730/2441655

Result: (PowerShell command)

Start-Process PowerShell -Verb RunAs "-Command `"cd '$pwd'; & 'PathToPS1File';`""

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Important note: The commands above are assuming that your computer has already been configured to allow script execution. If that's not the case, you may need to add -ExecutionPolicy Bypass to your powershell flags. (you may also want -NoProfile to avoid running profile scripts)