Filter differences in Tick and Quotes Use (like in get-adcomputer)

Question

I need clarity on a syntax issue that I don't see answered anywhere:
What are the PowerShell 5+ Filter differences in Tick and Quotes use (like in get-adcomputer)?
I find that whenever I use Filter in AD commands I get a variety of differences in syntax capability.
Like in this particular syntax I see quotes (") surrounding the whole syntax with '-and' and ticks(')
for the entries are what works.

    $result = get-adcomputer -Server $LocalDomainDC -Properties * -Filter 'enabled -ne "true" -and OperatingSystem -like "*Server*"'|`
    #$result.count |`
    Export-CSV .\output\$day-ServersEnabledInActiveDirectory.csv -NoTypeInformation -Encoding UTF8 -Append

But then I see on Technet an answer marked as working with the REVERSE syntax on the Ticks and Quotes:

    get-aduser -Server $LocalDomainDC -Properties * -Filter "enabled -ne 'true' -and Name -like '*Patrick*'"

So, what are the differences here? Why do they both work? When do we know which one to use, and why?

BTW:
I set $LocalDomainDC in my logon $profile for both PS and ISE to the

$LocalDomainDC = $env:LOGONSERVER.Remove(0,2)

---

Name Value

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PSVersion 5.1.17763.1852
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.17763.1852
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

Answer 1

Hi,

A string enclosed in double quotation marks is an expandable string. Variable names preceded by a dollar sign ($) are replaced with the variable's value before the string is passed to the command for processing.

A string enclosed in single-quotation marks is a verbatim string. The string is passed to the command exactly as you type it. No substitution is performed.

https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_quoting_rules

For example, this will return a user with the name "Patrick"

$user="patrick"  
Get-ADUser -Filter "Name -like '$user'"  

And this will return a user with the name "$user"

Get-ADUser -Filter 'Name -like "$user"'  

In your script, there are no differences for no variable is used.

Best Regards,
Ian Xue

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