Powershell: Can it be kept loaded to make script loading faster? - powershell

This is on Win10 and Win11:
I find that a desktop shortcut that runs:
powershell.exe -ExecutionPolicy Bypass -File C:\develop\utils\fetchlatest.ps1
Takes about 3 seconds to even start executing.
Is there a way I can cut this down?

Related

How to run a PowerShell Script in the background (no window) from Windows Explorer? [duplicate]

The shortcut below executes powershell.exe and passes it the script vscode.ps1. It works except that for all my attempts, it still displays a terminal window briefly when running. You can see I've passed parameters which is supposed to prevent this, but I still see the window. What do I have to do to execute a PS script from a shortcut without the terminal window being displayed?
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -nologo -NoProfile -WindowStyle Hidden -file C:\Users\bernie\OneDrive\PowerShell\vscode.ps1 C:\Users\bernie\OneDrive\Documents\windows.txt
It's a known issue, see https://github.com/PowerShell/PowerShell/issues/3028#issuecomment-583834582
As #Ciantic mentioned, the best way to work around this issue is by using a VB script:
In, say ps-run.vbs put
Set objShell = CreateObject("Wscript.Shell")
Set args = Wscript.Arguments
For Each arg In args
objShell.Run("powershell -windowstyle hidden -executionpolicy bypass -noninteractive ""&"" ""'" & arg & "'"""),0
Next
Then use it to run the command you want, e.g.
wscript "C:\Path\To\ps-run.vbs" "C:\Other\Path\To\your-script.ps1"
I use something like this to run a task frequently without seeing any flashing windows.
Yes, Powershell can't completely do this. But VBScript can do this. Also I use Hidden Start which can start any program hidden or bypass UAC.

Windows Sandbox PowerShell logon command window not visible

I'm trying to use Windows Sandbox with a PowerShell logon command. This is the LogonCommand section of my WSB file:
<LogonCommand>
<Command>C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe -executionpolicy unrestricted -file "C:\\Users\\WDAGUtilityAccount\\Desktop\\boot.ps1" -noexit</Command>
</LogonCommand>
The Windows Sandbox instance loads up okay suggesting no syntactic/validation issues with the WSB file content, but the PowerShell window is not shown. Adding -windowstyle normal has no effect.
I suspect the LogonCommand content is run in a command prompt which is not made visible so running the command to open PowerShell from it somehow "inherits" the terminal window not being visible.
Is it possible to force the PowerShell terminal window to reveal itself in such a case? I want to do this so that I can see the errors that I get because the PowerShell script is not executing as expected and I'm blind to any output/progress indication.
Found an answer (doesn't look like the cleanest option, but works):
<Command>powershell -executionpolicy unrestricted -command "start powershell {-noexit -file C:\Users\WDAGUtilityAccount\Desktop\boot.ps1}"</Command>
powershell switches from CMD to PowerShell
-windowstyle normal won't work to make this PowerShell window visible
-executionpolicy unrestricted allows the nested PowerShell to run from file
start powershell runs another PowerShell with visible window
Running this directly for LogonCommand will not work
-noexit tells the nested PowerShell to remain visible
This is not necessary but it is useful for debugging the script errors
-file C:\Users\WDAGUtilityAccount\Desktop\boot.ps1 runs the given script
Share it with the machine by using a MappedFolder in the WSB configuration

How to run PowerShell script without terminal window?

The shortcut below executes powershell.exe and passes it the script vscode.ps1. It works except that for all my attempts, it still displays a terminal window briefly when running. You can see I've passed parameters which is supposed to prevent this, but I still see the window. What do I have to do to execute a PS script from a shortcut without the terminal window being displayed?
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -nologo -NoProfile -WindowStyle Hidden -file C:\Users\bernie\OneDrive\PowerShell\vscode.ps1 C:\Users\bernie\OneDrive\Documents\windows.txt
It's a known issue, see https://github.com/PowerShell/PowerShell/issues/3028#issuecomment-583834582
As #Ciantic mentioned, the best way to work around this issue is by using a VB script:
In, say ps-run.vbs put
Set objShell = CreateObject("Wscript.Shell")
Set args = Wscript.Arguments
For Each arg In args
objShell.Run("powershell -windowstyle hidden -executionpolicy bypass -noninteractive ""&"" ""'" & arg & "'"""),0
Next
Then use it to run the command you want, e.g.
wscript "C:\Path\To\ps-run.vbs" "C:\Other\Path\To\your-script.ps1"
I use something like this to run a task frequently without seeing any flashing windows.
Yes, Powershell can't completely do this. But VBScript can do this. Also I use Hidden Start which can start any program hidden or bypass UAC.

How to run a PowerShell script in folder having space in its name?

Running a script in C:\Users\Ooker\Desktop is fine, but yields error in C:\Users\Ooker\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup.
I guess it's because of Start Menu have space in between, but I don't know how to double click the file and make it run. There seems to have no way to bracket the path beforehand.
I can run it in CLI, and it doesn't reference itself.
Few ways to do it.
Registry:
Edit your reg key at
HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\Shell\Open\Command
to
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noLogo -ExecutionPolicy unrestricted -file "%1"
or
Shortcut: Create a shortcut with the target:
powershell.exe -command "& 'C:\Users\Ooker\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MyScript.ps1'"
keep in mind that the opening in a notepad is a safety measure in the event you accidentally run it when it is not intended.

Get bat file to contiune when lauching PowerShell

I have a bat file that is launching a powerShell script. I would like for the bat file to keep moving after it launches the script and not wait for the powerShell script to complete. Every time right now when i launch the powerShell script the bat files waits till the powerShell script finishes before it moves on. Here is how I'm calling my powerShell script:
PowerShell.exe -NoProfile -ExecutionPolicy Bypass -Command "&'C:\Users\sharph\Desktop\test.ps1'"
SS64 'start' help page
You'll want to start it with the start command, like this;
start "" "PowerShell"
This will start a program without waiting for it to close, although that behavior can be re-added with the /w or /wait option. The blank "" is in place of the title, not always needed but generally a safe thing to add.
Perhaps this will work?
start "" "PowerShell" -NoProfile -ExecutionPolicy Bypass -Command "^& 'C:\Users\sharph\Desktop\test.ps1'"
of course, the & had to be delimited to ^&.