CODEWITHSUNDEEP
functionpowershellmodule
Shaun Luttin
Shaun Luttin

Reputation: 141512

Custom function is not recognized

A function that I dotted-in to my PowerShell profile is not available during my current session. The function looks like this: 

# \MyModules\Foobar.ps1

function Foo-Bar {
    Write-Host "Foobar";
}

# Test loading of this file
Foo-Bar;

And my profile looks like this: 

# \Microsoft.PowerShell_profile.ps1

Write-Host "Loading MyModules..."
Push-Location ~\Documents\WindowsPowerShell\MyModules

.\Foobar.ps1

Pop-Location
Write-Host "Done"

When I run . $profile the output looks as follows, which confirms the Foo-Bar function works. 

> . $profile 

Loading MyModules...
Foobar
Done

Running the Foo-Bar function after that, though, explodes like this:

Foo-Bar : The term 'Foo-Bar' 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.

At line:1 char:1
+ Foo-Bar
+ ~~~~~~~
    + CategoryInfo          : ObjectNotFound: (Foo-Bar:String) [],        
                              CommandNotFoundException

    + FullyQualifiedErrorId : CommandNotFoundException

Why isn't it available?

Upvotes: 2

Views: 2870

Answers (1)

Chase Florell
Chase Florell

Reputation: 47387

Well, there are a couple of ways to approach it. Note, neither one of these approaches will require you to dot-invoke your module before importing it.

1) use a proper module MyMethod.psm1

# MyMethod.psm1 (m for module)
function MyMethod {
    # my method
}
Export-ModuleMember MyMethod

# then in your profile
Import-Module "MyMethod"

2) if you have a collection of methods and need to break them into multiple files

# MyMethod1.ps1
function Invoke-MyMethod1{
    # my method1
}
Set-Alias imm Invoke-MyMethod1

# MyMethod2.ps1
function Something-MyMethod2 {
    # my method2
}
Set-Alias smm Something-MyMethod2

# MyMethod.psm1 (m for module)
Push-Location $psScriptRoot
. .\MyMethod1.ps1
. .\MyMethod2.ps1
Pop-Location

Export-ModuleMember `
    -Alias @(
        '*') `
    -Function @(
          'Invoke-MyMethod1',
          'Something-MyMethod2')

# then in your profile
Import-Module "MyMethod"

Upvotes: 3

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