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I wanted to see colorized filenames when I typed dir in Powershell. So, I added the Set-ChildItemColor function from here to my profile file. I also added this line at the end of the profile file to override the dir alias:

Set-Alias dir Get-ChildItemColor

Now, when I open Powershell, I get this error:

Set-Alias : The AllScope option cannot be removed from the alias 'dir'.
At C:\Users\joe\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1:82
char:10
+ Set-Alias <<<<  dir Get-ChildItemColor
    + CategoryInfo          : WriteError: (dir:String) [Set-Alias], SessionStateUna
   uthorizedAccessException
    + FullyQualifiedErrorId : AliasAllScopeOptionCannotBeRemoved,Microsoft.PowerShe
   ll.Commands.SetAliasCommand

What is this AllScope? How do I remove that option to get colorized dir?

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Not sure why this was closed.. I had exactly this ("AllScope option cannot be removed") and the answer below solved my problem. –  John Fouhy Aug 5 '13 at 4:32

1 Answer 1

Use the -Option parameter of Set-Alias.

Set-Alias -Name dir -Value Set-ChildItemColor -Option AllScope

See Get-Help Set-Alias and Get-Help about_Scope for details.

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