Install oh-my-posh for all Users

[nox309]

Hi, I may be blind, I am trying to install Oh-my-Posh for all users. I do the installation manually in a PowerShell script via PowerShell (manual installation).
The installation works, but only for the admin user under which the script is executed. I have seen that in the Install.ps1 script, a switch is included to perform the installation for all users. But I can't find any info on how to do this.

[JanDeDobbeleer]

If you execute the script using ./install.ps1 -AllUsers it will do that. Alternatively, you can use winget which has an /ALLUSERS switch.

[TiltonJH]

FYI: winget install JanDeDobbeleer.OhMyPosh --scope machine

--scope machine is the /ALLUSERS switch 😉

[nox309]

thank you, is it possible with the one-liner (Set-ExecutionPolicy Bypass -Scope Process -Force; Invoke-Expression ((New-Object System.Net.WebClient).DownloadString('https://ohmyposh.dev/install.ps1')) )? unfortunately Winget is blocked in our company network. And I would not like to download the install script and add it to the source of my project, which would mean that if the install script changes, I would not necessarily know about it.

[JanDeDobbeleer]

With the power of the interwebs:

Invoke-Command -ScriptBlock ([scriptblock]::Create([System.Text.Encoding]::UTF8.GetString((New-Object Net.WebClient).DownloadData('https://ohmyposh.dev/install.ps1')))) -ArgumentList @('AllUsers')

[nox309]

Thanks, will test it

[biereluc]

@JanDeDobbeleer, is it possible that the syntax of your one-liner is wrong? You can't pass a switch parameter in a scriptblock. We need to pass the value of our argument, must $true to enable the -AllUsers.

Like this :

Invoke-Command -ScriptBlock ([scriptblock]::Create([System.Text.Encoding]::UTF8.GetString((New-Object Net.WebClient).DownloadData('https://ohmyposh.dev/install.ps1')))) -ArgumentList $true

More easy way:

# With & call operator
& ([scriptblock]::Create([System.Text.Encoding]::UTF8.GetString((New-Object Net.WebClient).DownloadData('https://ohmyposh.dev/install.ps1')))) -AllUsers
# or with Invoke-WebRequest
& ([scriptblock]::Create((iwr 'https://ohmyposh.dev/install.ps1'))) -AllUsers

Anyway the following command throws an error in all the environments that I tried to run it.

>Invoke-Command -ScriptBlock ([scriptblock]::Create([System.Text.Encoding]::UTF8.GetString((New-Object Net.WebClient).DownloadData('https://ohmyposh.dev/install.ps1')))) -ArgumentList @('AllUsers')
>Invoke-Command : Cannot convert the "AllUsers" value of type "System.String" to type
"System.Management.Automation.SwitchParameter".
At line:1 char:1
+ Invoke-Command -ScriptBlock ([scriptblock]::Create([System.Text.Encod ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Invoke-Command], PSInvalidCastException
    + FullyQualifiedErrorId : ConvertToFinalInvalidCastException,Microsoft.PowerShell.Commands.InvokeCommandCommand

[JanDeDobbeleer]

Could be, as I said, I just copy-pasted this.

[PennyCilin-gmx]

When I use the following script for installing ohmyposh, logged on as an admin starting Powershell 7.
Invoke-Command -ScriptBlock ([scriptblock]::Create([System.Text.Encoding]::UTF8.GetString((New-Object Net.WebClient).DownloadData('https://ohmyposh.dev/install.ps1')))) -ArgumentList $true``

It installs only the x86and not x64 for all users. I have PowerShell 7 (x64) installed.
PS> (Get-Command oh-my-posh).Source C:\Program Files (x86)\oh-my-posh\bin\oh-my-posh.exe

What goes wrong?

And next problem is, update / upgrade with winget doesn't work.
How can I install OhMyPosh for all users and using winget for updates?

[JanDeDobbeleer]

@PennyCilin-gmx it's no longer possible to achieve this. I still need to refactor the install script to facilitate this however. We're moving to MSIX which doesn't offer system wide installation.

[PennyCilin-gmx]

@JanDeDobbeleer,

thank you very much for your reply. I logged on with an admin account. Downloaded the latest release of oh-my-posh (install-x64.msi) and installed it.
I check the Installation Path with (Get-Command oh-my-posh).Source and wondering:
the path is
C:\Program Files (x86)\oh-my-posh\bin\oh-my-posh.exe
???
I remember the path for x64 executables where
C:\Program Files

Okay, Oh-my-posh is available for all user accounts on my PC
I hope I can update this installation using winget in the future.

Greeting Penny.

[PennyCilin-gmx]

@jan I respect your opinion. But I think for PCs which have some user accounts (two or more) it's easy to have a systemwide installation method, instead to do the install for every user.. But it can be also a security risk.

Greetings Penny.

[JanDeDobbeleer]

@PennyCilin-gmx it's not a personal decision, it's mostly due to MSIX not supporting this and MSI being a terrible experience.

[PennyCilin-gmx]

@JanDeDobbeleer
Okay, I understand. But I'm a old school developer (long time ago), programming in Cobol, Fortran and Pascal. Scripting in REXX and learning more and more PowerShell.

Yes, I know programming in / for Windows is awful.
So now OhMyPosh works now on my Notebook with MS$ Windows 11 Pro.

Greetings Penny.

[PennyCilin-gmx]

Sorry that I ask again.
Today, winget shows that there is an update for oh my posh. I start PowerShell Core with an elevated prompt. perform

winget update JanDeDobbeleer.OhMyPosh --scope machine --force

and get the following message:

Es wurde eine neuere Version gefunden, die Installationstechnologie unterscheidet sich jedoch von der aktuellen installierten Version. Deinstallieren Sie das Paket, und installieren Sie die neuere Version.

So I cannot update Oh My Posh with winget for all users.

That's the problem, which is horrible for me. While I don't understand how to install Oh My Posh for all users on some PCs.

Is the best way, to use the following script, that I found in this thread?
`# With & call operator
& ([scriptblock]::Create([System.Text.Encoding]::UTF8.GetString((New-Object Net.WebClient).DownloadData('https://ohmyposh.dev/install.ps1')))) -AllUsers

or with Invoke-WebRequest

& ([scriptblock]::Create((iwr 'https://ohmyposh.dev/install.ps1'))) -AllUsers`

Thank you very much for help and clarify this.

Greetings Penny.