Powershell: GCIM Alias does not work in PowerShell 7 RC3
The GCIM alias works in WIndows PowerShell 5.1 and points to Get-CImInstance.
This alias is not present in RC3
Steps to reproduce
GCIM -Class WIn32_bios
Expected behavior
PS C:\foo> gcim -class win32_Bios
SMBIOSBIOSVersion : A16
Manufacturer : Dell Inc.
Name : Phoenix ROM BIOS PLUS Version 1.10 A16
SerialNumber : 87Q285J
Version : DELL - 15
Actual behavior
PS C:foo> gcim win32_bios
gcim: The term 'gcim' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
Suggestion [4,General]: The most similar commands are: gci, gcm, gc, gcs, gi, gm, icm, gcb, gin.
Environment data
PS C:\foo> $PSVersionTable
Name Value
---- -----
PSVersion 7.0.0-rc.3
PSEdition Core
GitCommitId 7.0.0-rc.3
OS Microsoft Windows 10.0.19569
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0, 5.0, 5.1.10032.0, 6.0.0, 6.1.0, 6.2.0, 7.0.0-rc.3}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0
Please return this alias as it's useful at the command line.
doctordns
All 18 comments
I can not repo:
get-alias gcim
CommandType Name Version Source
----------- ---- ------- ------
Alias gcim -> Get-CimInstance
iSazonov
on 2 Mar 2020
it works as expected (PowerShell 7 RC3)
GCIM -Class WIn32_bios
SMBIOSBIOSVersion : 02.25
Manufacturer : AMI
Name : BIOS Date: 10/24/18 11:07:25 Ver: 04.06.05
SerialNumber : CZC5390L7Y
Version : HPQOEM - 1072009
scriptingstudio
on 3 Mar 2020
Wow that's bizarre. It works for me now, but I know for fact I've hit a command not found for gcim since installing RC3.
If I can figure out how to repro I'll update, but something is up.
SeeminglyScience
on 3 Mar 2020
I can't repo it now either - but it _was_ failing.
doctordns
on 3 Mar 2020
@iSazonov I wouldn't close this yet. There appears to be something situational that causes the command lookup to fail. Until we know what that is, the issue should stay open.
SeeminglyScience
on 3 Mar 2020
Close is not remove :-) As soon as someone can reproduce the problem we will continue.
iSazonov
on 3 Mar 2020
Yeah, I know it's not removed. I'm saying "we don't know what causes the problem" is not a good reason to close an issue.
SeeminglyScience
on 3 Mar 2020
Well - if it's closed it's effectively removed. :-)
I have seen this a couple of times but it is NOT repeatable. And it _always_ goes away after a reboot.
doctordns
on 4 Mar 2020
@doctordns You could use transcription or logging to get more info. Or add (Get-Alias).Count in prompt function to see every second the count.
iSazonov
on 4 Mar 2020
There's definitely some race condition that triggers this. I had it happen again, here's some info:
Note that f in this context is a custom alias to ForEach-Object
Loading personal and system profiles took 2272ms.
PS> gcm add-odbcdsn
CommandType Name Version Source
----------- ---- ------- ------
Function Add-OdbcDsn 1.0.0.0 Wdac
PS> gcm add-odbcdsn|f Definition
[CmdletBinding(PositionalBinding=$false)]
[OutputType([Microsoft.Management.Infrastructure.CimInstance[]])][OutputType('Microsoft.Management.Infrastructure.CimInstance#MSFT_OdbcDsn')]
param(
[Parameter(ParameterSetName='Add0', Mandatory=$true, Position=0, ValueFromPipelineByPropertyName=$true)]
[Alias('DsnName')]
[ValidateLength(1, 32)]
[ValidateNotNull()]
[ValidateNotNullOrEmpty()]
[string]
${Name},
[Parameter(ParameterSetName='Add0', Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
[ValidateNotNull()]
[ValidateNotNullOrEmpty()]
[string]
${DriverName},
[Parameter(ParameterSetName='Add0', ValueFromPipelineByPropertyName=$true)]
[ValidateNotNull()]
[ValidateNotNullOrEmpty()]
[string[]]
${SetPropertyValue},
[Parameter(ParameterSetName='Add0')]
[ValidateNotNull()]
[ValidateNotNullOrEmpty()]
[switch]
${PassThru},
[Parameter(ParameterSetName='Add0', ValueFromPipelineByPropertyName=$true)]
[ValidateNotNull()]
[ValidateNotNullOrEmpty()]
[ValidateSet('32-bit','64-bit')]
[string]
${Platform},
[Parameter(ParameterSetName='Add0', Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
[ValidateNotNull()]
[ValidateNotNullOrEmpty()]
[ValidateSet('User','System')]
[string]
${DsnType},
[Parameter(ParameterSetName='Add0')]
[Alias('Session')]
[ValidateNotNullOrEmpty()]
[CimSession[]]
${CimSession},
[Parameter(ParameterSetName='Add0')]
[int]
${ThrottleLimit},
[Parameter(ParameterSetName='Add0')]
[switch]
${AsJob})
DynamicParam {
try
{
if (-not $__cmdletization_exceptionHasBeenThrown)
{
$__cmdletization_objectModelWrapper = $script:ObjectModelWrapper::new()
$__cmdletization_objectModelWrapper.Initialize($PSCmdlet, $script:ClassName, $script:ClassVersion, $script:ModuleVersion, $script:PrivateData)
if ($__cmdletization_objectModelWrapper -is [System.Management.Automation.IDynamicParameters])
{
([System.Management.Automation.IDynamicParameters]$__cmdletization_objectModelWrapper).GetDynamicParameters()
}
}
}
catch
{
$__cmdletization_exceptionHasBeenThrown = $true
throw
}
}
Begin {
$__cmdletization_exceptionHasBeenThrown = $false
try
{
__cmdletization_BindCommonParameters $__cmdletization_objectModelWrapper $PSBoundParameters
$__cmdletization_objectModelWrapper.BeginProcessing()
}
catch
{
$__cmdletization_exceptionHasBeenThrown = $true
throw
}
}
Process {
try
{
if (-not $__cmdletization_exceptionHasBeenThrown)
{
$__cmdletization_methodParameters = [System.Collections.Generic.List[Microsoft.PowerShell.Cmdletization.MethodParameter]]::new()
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
if ($PSBoundParameters.ContainsKey('Name')) {
[object]$__cmdletization_value = ${Name}
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'Name'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_value; IsValuePresent = $true}
} else {
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'Name'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
}
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
if ($PSBoundParameters.ContainsKey('DriverName')) {
[object]$__cmdletization_value = ${DriverName}
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'DriverName'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_value; IsValuePresent = $true}
} else {
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'DriverName'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
}
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
if ($PSBoundParameters.ContainsKey('SetPropertyValue')) {
[object]$__cmdletization_value = ${SetPropertyValue}
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'SetPropertyValue'; ParameterType = 'System.String[]'; Bindings = 'In'; Value = $__cmdletization_value; IsValuePresent = $true}
} else {
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'SetPropertyValue'; ParameterType = 'System.String[]'; Bindings = 'In'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
}
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
if ($PSBoundParameters.ContainsKey('PassThru')) {
[object]$__cmdletization_value = ${PassThru}
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'PassThru'; ParameterType = 'System.Management.Automation.SwitchParameter'; Bindings = 'In'; Value = $__cmdletization_value; IsValuePresent = $true}
} else {
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'PassThru'; ParameterType = 'System.Management.Automation.SwitchParameter'; Bindings = 'In'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
}
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
if ($PSBoundParameters.ContainsKey('Platform')) {
[object]$__cmdletization_value = ${Platform}
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'Platform'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_value; IsValuePresent = $true}
} else {
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'Platform'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
}
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
if ($PSBoundParameters.ContainsKey('DsnType')) {
[object]$__cmdletization_value = ${DsnType}
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'DsnType'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_value; IsValuePresent = $true}
} else {
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'DsnType'; ParameterType = 'System.String'; Bindings = 'In'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
}
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
[object]$__cmdletization_defaultValue = $null
[object]$__cmdletization_defaultValueIsPresent = $false
$__cmdletization_methodParameter = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{Name = 'CmdletOutput'; ParameterType = 'Microsoft.Management.Infrastructure.CimInstance[]'; Bindings = 'Out'; Value = $__cmdletization_defaultValue; IsValuePresent = $__cmdletization_defaultValueIsPresent}
$__cmdletization_methodParameter.ParameterTypeName = 'Microsoft.Management.Infrastructure.CimInstance#MSFT_OdbcDsn'
$__cmdletization_methodParameters.Add($__cmdletization_methodParameter)
$__cmdletization_returnValue = [Microsoft.PowerShell.Cmdletization.MethodParameter]@{ Name = 'ReturnValue'; ParameterType = 'System.Int32'; Bindings = 'Error'; Value = $null; IsValuePresent = $false }
$__cmdletization_methodInvocationInfo = [Microsoft.PowerShell.Cmdletization.MethodInvocationInfo]::new('Add', $__cmdletization_methodParameters, $__cmdletization_returnValue)
$__cmdletization_objectModelWrapper.ProcessRecord($__cmdletization_methodInvocationInfo)
}
}
catch
{
$__cmdletization_exceptionHasBeenThrown = $true
throw
}
}
End {
try
{
if (-not $__cmdletization_exceptionHasBeenThrown)
{
$__cmdletization_objectModelWrapper.EndProcessing()
}
}
catch
{
throw
}
}
# .EXTERNALHELP MSFT_OdbcDsnTask_v1.0.cdxml-Help.xml
PS> gcm add-odbcdsn
CommandType Name Version Source
----------- ---- ------- ------
Function Add-OdbcDsn 1.0.0.0 Wdac
PS> gmo wdac
ModuleType Version PreRelease Name ExportedCommands
---------- ------- ---------- ---- ----------------
Manifest 1.0.0.0 Wdac {Add-OdbcDsn, Disable-OdbcPerfCounter, Disable-WdacBidTrace, Enable-O…
PS> gmo wdac|f path
C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\Wdac\Wdac.psd1
PS> gcim -namesp root/microsoft/windows/wdac msft_odbcdsntask
gcim: The term 'gcim' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
Suggestion [4,General]: The most similar commands are: gci, gcm, gc, gcs, gi, gm, icm, gcb, gin, vim.
gcm add-odbcdsn
gcm add-odbcdsn|f Definition
gcm add-odbcdsn
gmo wdac
gmo wdac|f path
gcim -namesp root/microsoft/windows/wdac msft_odbcdsntask
Repeating those steps exactly doesn't repro which is what makes me think it's a race condition. I tend to have quite a few pwsh windows open and move between them a lot. I think it's possible that something I was doing in one of the other windows at the same time as something else caused this, but I couldn't tell you what else I was doing at the time.
I tried a few things to get gcim back in that session, nothing worked. The CIM commands like Get-CimInstance worked fine, just the alias was missing. In all other sessions gcim is found without issue.
@iSazonov Please reopen this issue.
SeeminglyScience
on 6 May 2020
You could look __how__ the alias and some other aliases is created at the module load time.
iSazonov
on 6 May 2020
@iSazonov oh... yeah... good call...
I had assumed it was a built-in alias since gcm gcim doesn't show a module as a source.
That's really fragile, here's a super easy repro:
# Start a new session and run this:
& { $null = Get-CimInstance win32_process <# or any other class #> }
gcim
It probably occurred with what I posted above because I have a custom TabExpansion2 and must have triggered the import through that without realizing it.
SeeminglyScience
on 6 May 2020
Doesn't repro in Windows PowerShell though, so maybe there was a change made to how AllScope aliases are resolved (alias.Options is ReadOnly, AllScope).
SeeminglyScience
on 6 May 2020
We could move this to alias attributes.
iSazonov
on 6 May 2020
Seems odd not to be using the alias attributes, indeed. Would there be a reason not to be? Or just because the code hasn't been updated in a while?
vexx32
on 6 May 2020
Maybe they wanted to demo IModuleAssemblyInitializer? Or the CIM cmdlets were just written by another team that didn't know about the attribute? I thought it was added in PSv3, but I could be wrong.
Either way, definitely should use the attribute.
SeeminglyScience
on 6 May 2020
I've gone ahead and created a pull request for just that, my first one, so hope I got it somewhat right
thlac
on 10 May 2020
:tada:This issue was addressed in #12617, which has now been successfully released as v7.1.0-preview.4.:tada:
Handy links:
![msftbot[bot] picture](https://avatars2.githubusercontent.com/in/26612?v=4&s=40)
msftbot[bot]
on 25 Jun 2020
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Most helpful comment
I've gone ahead and created a pull request for just that, my first one, so hope I got it somewhat right