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Function : Get-Function

Here’s a time saver… well a quick function that has saved me a whole herd of time when trying to find a function that has been “forgotten”

Function Get-Function ($searchterm,[switch]$DEFINITION)
	$functions = @(Get-Command "*$searchterm*" -CommandType "Function")
	"`nFunctions matching ""$searchterm""`n" | Write-Host -ForegroundColor Green
	if (!$DEFINITION) {$functions | %{$_.name}} else {$functions | %{"`n$($_.name)" | Write-Host -f Yellow ;$_.definition}}

sal gf Get-Function

the last line is setting an alias “gf”
– so let’s try this on something familiar… we had a function searching for apps…

Command: gf apps
Functions matching “apps”

Ahh – “installed apps”, let’s try that one again, and get Details this time:

Command: gf installedapps -de
Functions matching “installedapps”
param (
$regkey_x64 = “SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall”,
$regkey_x86 = “SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall”,
$bits_to_search = @()
if (!$EXCLUDE32){$bits_to_search += “x86”}
if (!$EXCLUDE64){$bits_to_search += “x64”}

$apps = @()
foreach ($bit in $bits_to_search)
$regkey = Get-Variable “regkey_$bit” | %{$_.value}
if (Test-Path HKLM:$regkey)
$reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey(“LocalMachine”,$computername)
$key = $reg.OpenSubKey($regkey)
$SubKeys = $key.GetSubKeyNames() | %{$key.OpenSubKey($_)}

foreach ($subkey in $subkeys)
$app = $subkey | select @{N=”Bit”;E={$bit}},`
if ($app.name) {$apps += $app}

# Remove duplicates, but annoyingly names like of “C++” error when using “-match”
$unique_apps = @()
foreach ($app in $apps)
if (!($unique_apps | ?{$_.Bit -eq $app.bit} | ?{$_.name -eq $app.name} |
?{$_.version -eq $app.version})) {$unique_apps += $app}

return $unique_apps | sort bit,name,version

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