localUser.ps1

[bool] $ToRunApp = $true

while($ToRunApp){
    [CmdletBinding()]
    [string]$Command = Read-Host -Prompt "Enter one of the following commands: Create, Remove, Rename, Quit"
    [string[]]$ComputerName = $env:COMPUTERNAME

    # Creating the user
    if($Command -eq "Create") { 
        [string]$ObjectName = Read-Host -Prompt "Enter a username for the user account"
        $PasswordForUser = Read-Host -Prompt "Enter a password for user account" -AsSecureString
        $BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($PasswordForUser)
        $PlainPassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR) 
        
        foreach($Computer in $ComputerName) {
            if(Test-Connection -ComputerName $Computer -count 1 -Quiet) {
                    try {
                        $CompObject = [ADSI]"WinNT://$Computer"
                        $NewObj = $CompObject.Create("User",$ObjectName)
                        $NewObj.SetPassword($PlainPassword)
                        $NewObj.SetInfo()
                        Write-Host "User account with the name $ObjectName created successfully" -ForegroundColor Green
                    } catch {
                        Write-Warning "Error occurred while creating the user"
                        Write-Verbose "More details : $_"

                    }
            } else {
                    Write-Warning "$Computer is not online or avaliable"
            }
        }
    }

    # Removing the user
    elseif($Command -eq "Remove") { 
        [string]$ObjectName = Read-Host -Prompt "Enter the username for the user account to be removed"

        foreach($Computer in $ComputerName) {
            if(Test-Connection -ComputerName $Computer -count 1 -Quiet) {
                try {
                    Remove-LocalUser -Name $ObjectName
                    Write-Host "Removed the user account: $ObjectName" -ForegroundColor Green
                } catch {
                    Write-Warning "Error occurred while removing the user"
                    Write-Verbose "More details : $_"
                }    
            } else {
                    Write-Warning "$Computer is not online or avaliable"
            }
        }
    }

    # Renaming the user
    elseif($Command -eq "Rename") { 
        [string]$CurrentUsername = Read-Host -Prompt "Enter the username for the user account to be renamed"
        [string]$NewUsername = Read-Host -Prompt "Enter the new username"

        foreach($Computer in $ComputerName) {
            if(Test-Connection -ComputerName $Computer -count 1 -Quiet) {
                try {
                    Rename-LocalUser -Name $CurrentUsername -NewName $NewUsername
                    Write-Host "Renamed the user account $CurrentUsername to $NewUsername" -ForegroundColor Green
                } catch {
                    Write-Warning "Error occurred while renaming the user"
                    Write-Verbose "More details : $_"
                }    
            } else {
                    Write-Warning "$Computer is not online or avaliable"
            }
        }
    }

    # Quitting the application
    elseif($Command -eq "Quit") {   
        $ToRunProgram = $false
        Write-Host "Quitting application..." -ForegroundColor Yellow
    }

    # Error Unrecognized Command 
    else {   
        Write-Host "Command input not recognized, please try again." -ForegroundColor Red
    }
}