PowerShell: Search all property values - powershell

Question

How can I search all the properties of a single object for a given string?
Say I have the following command output:
get-aduser jtest -properties *
DistinguishedName : CN=jtest,CN=Users,DC=confederationc,DC=on,DC=ca
Enabled : True
GivenName : Justus
Name : jtest
ObjectClass : user
ObjectGUID : f4d31d45-0505-433e-9442-152419e75d26
SamAccountName : jtest
SID : S-1-5-21-2138664166-620177494-281947949-184391
Surname : Test
UserPrincipalName : jtest#confederationcollege.ca
...output truncated
How can I search for any property that contains the string "jtest"?
I feel like I must be missing something obvious.

Answer 1

There's always findstr (case insensitive), but the result is only text. This is a common question.
get-aduser jtest | findstr /i jtest
Name : jtest
SamAccountName : jtest
UserPrincipalName : jtest#confederationcollege.ca
This doesn't work in all cases, but it does for registry entries. This can match against most property names or values. It depends on what "$_" converts to as a string. Generic pscustomobjects work. It won't work for the get-aduser example (the object converts to a distinguishedname string).
get-itemproperty hkcu:\key1 | ? { $_ -match 'foo' } # or 'emspace'
value1 : 17
emspace : foo bar
refcount : {255, 255}
PSPath : Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER\key1
PSParentPath : Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER
PSChildName : key1
PSDrive : HKCU
PSProvider : Microsoft.PowerShell.Core\Registry
get-itemproperty hkcu:\key1 | % { "$_" } # showing string conversion
#{value1=17; emspace=foo bar; refcount=System.Byte[]; PSPath=Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER\key1; PSParentPath=Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER; PSChildName=key1; PSDrive=HKCU; PSProvider=Microsoft.PowerShell.Core\Registry}

Answer 2

You can use the hidden psobject memberset on any object in PowerShell to access its underlying properties programmatically:
foreach($user in Get-ADUser jtest){
foreach($property in $user.psobject.Properties){
if($_.Value -like '*jtest*'){
"Property '$($_.Name)' has value '$($_.Value)'"
}
}
}