Extending Bulk AD Accounts Expiration date by 6 months via PowerShell

Question

I am fairly new to PowerShell and this maybe straight forward for a professional.

I am looking to extend expiration date a bulk of AD usernames in a text file by 6 months.

Preferably if the code could pick up the current date and extend from there.

As I have been doing some googling and testing I am come up with the command to do a single account in PowerShell:

Set-ADAccountExpiration SMahmood -DateTime "06/11/2022"

The above command I obviously have to change the username and date (if I run the command on different day) every time I run the command.

I have also managed to find some script of another person who asked a similar question but his script asks you to define the username each time you would like to extend it (this is not my code but has been tested as working) :

$continue = $true

while ($continue) {
    write-host " AD Account Expiration Date Changer" -ForegroundColor White
    Write-Host ""

    while ($true) {
        try {
            # Loop until a valid username is entered
    
            $Entered_Username_0 = Read-Host "Enter a username"
            $Entered_Username = $Entered_Username_0.Trim()
               
            if (Get-ADUser -Identity $Entered_Username | Out-Null) {
                throw
            }
    
            break
        }
        catch {
            Write-Host ""
            Write-Host "Invalid username entered!" -ForegroundColor Red
            Write-Host ""
        }
    }
    $dateMin = [datetime]::Now
    $dateMin_short = $dateMin.ToShortDateString()

    Write-Host "Press 1 to extend the account expiration date by 6 months"
    Write-Host "Press 2 to extend the account expiration date to a sprecific date"
    $Choice_input = Read-Host "Please select an option"
    while ($true) {
        try {
            if ($Choice_input -eq 2) {
                while ($true) {
                    try {
                        # Loop until a valid Date is entered and that Date is above $dateMin

                        $Entered_Date = [datetime]::ParseExact(
                            (Read-Host "Enter a new expiry date, in the format DD/MM/YYYY"),
                            'dd/MM/yyyy',
                            [System.Globalization.CultureInfo]::new('en-GB')
                        )

                        if ($Entered_Date -lt $dateMin) {
                            throw
                        }

                        break

                    }
                    catch {
                        Write-Host ""
                        Write-Host "Invalid date entered! Format must be DD/MM/YYYY and higher than $dateMin_short." -ForegroundColor Red
                        Write-Host ""
                    }
                }
            }
            if ($Choice_input -eq 1) {

                $Entered_Date = [datetime]::Now.addmonths(6)
            }

            else {
                throw
            }

            break
        }
        catch {
            Write-Host ""
            Write-Host "Please input a either 1 or 2." -ForegroundColor Red
            Write-Host ""
        }
    }

    try {
        Set-ADAccountExpiration -Identity $Entered_Username -DateTime $Entered_Date.AddHours(24)
        Write-Host ""
        Write-Host "New account expiration date for $Entered_Username is $(($Entered_Date).toString('dd/MM/yyyy'))"-ForegroundColor Green
        $Entered_Date = ($Entered_date).toString('dd/MM/yyyy')

    }
    catch {
        Write-Host ""
        Write-Host "Unable to set account expiry: $_"-ForegroundColor Red
    }
    Write-Host ""
} 
$continue = $true

while ($continue) {
    write-host " AD Account Expiration Date Changer" -ForegroundColor White
    Write-Host ""

    while ($true) {
        try {
            # Loop until a valid username is entered
    
            $Entered_Username_0 = Read-Host "Enter a username"
            $Entered_Username = $Entered_Username_0.Trim()
               
            if (Get-ADUser -Identity $Entered_Username | Out-Null) {
                throw
            }
    
            break
        }
        catch {
            Write-Host ""
            Write-Host "Invalid username entered!" -ForegroundColor Red
            Write-Host ""
        }
    }
    $dateMin = [datetime]::Now
    $dateMin_short = $dateMin.ToShortDateString()

    Write-Host "Press 1 to extend the account expiration date by 6 months"
    Write-Host "Press 2 to extend the account expiration date to a sprecific date"
    $Choice_input = Read-Host "Please select an option"
    while ($true) {
        try {
            if ($Choice_input -eq 2) {
                while ($true) {
                    try {
                        # Loop until a valid Date is entered and that Date is above $dateMin

                        $Entered_Date = [datetime]::ParseExact(
                            (Read-Host "Enter a new expiry date, in the format DD/MM/YYYY"),
                            'dd/MM/yyyy',
                            [System.Globalization.CultureInfo]::new('en-GB')
                        )

                        if ($Entered_Date -lt $dateMin) {
                            throw
                        }

                        break

                    }
                    catch {
                        Write-Host ""
                        Write-Host "Invalid date entered! Format must be DD/MM/YYYY and higher than $dateMin_short." -ForegroundColor Red
                        Write-Host ""
                    }
                }
            }
            if ($Choice_input -eq 1) {

                $Entered_Date = [datetime]::Now.addmonths(6)
            }

            else {
                throw
            }

            break
        }
        catch {
            Write-Host ""
            Write-Host "Please input a either 1 or 2." -ForegroundColor Red
            Write-Host ""
        }
    }

    try {
        Set-ADAccountExpiration -Identity $Entered_Username -DateTime $Entered_Date.AddHours(24)
        Write-Host ""
        Write-Host "New account expiration date for $Entered_Username is $(($Entered_Date).toString('dd/MM/yyyy'))"-ForegroundColor Green
        $Entered_Date = ($Entered_date).toString('dd/MM/yyyy')

    }
    catch {
        Write-Host ""
        Write-Host "Unable to set account expiry: $_"-ForegroundColor Red
    }
    Write-Host ""
}

Big thanks Vihaan Reyansh who provided the script above I had to tweak it a bit as it was changing the description field.