Cannot convert System.Object [] to type System.Management.Automation.ScriptBlock, the required Process method is not supported

Powershell works with cmdlets. Among cmdlets there are analogues of commands from the command line (CMD).

He command line cmd is markedly different as follows:

• It is possible to transfer the results of running one cmdlet to others, filter and sort the results.
• It is possible to call .Net Framework static functions.

About other differences google, if required.

Let us analyze your example script in rows (first part)

 $hostname = "microsoft.com" $result = [System.Net.Dns]::GetHostByName($hostname) $result.AddressList | ForEach-Object {$_.IPAddressToString} 

1. Variable declaration
2. Variable declaration (type IPHostEntry ). The function call .Net Framework System.Net.Dns.GetHostByName (string hostName) . This function returns the result of type System.Net.IPHostEntry
3. We take from the result the value of AddressList . In fact, this is not a single value, but a list of System.Net.IPAddress values. Next, run the cmdlet, which iterates the list of these System.Net.IPAddress, converts each of them into a string and displays it in the console.

The second part of the script

 # или воспользоваться циклом если нужно проверить несколько хостов: # Массив доменных имен для проверки $name = 'remotehelp.pp.ua','remoteadministrator.pp.ua' # Сервер имен который нужно опросить # если нужно опросить системные ДНС, оставьте пустое значение $ns='ns1.server.biz' $i=0 while($i -lt $name.length) { nslookup $name[$i] $ns echo '--------------------------------------------------' $i++ } 

1. Variable declaration (array of strings)
2. Variable declaration
3. Variable declaration
4. A cycle from 0 to the number of lines minus 1 (because -lt means less, not less or equal) in the first variable (1). I shortened the list, so in this case the cycle will be executed 2 times
5. Call the command line utility nslookup with the parameters "string from the list $name " and "DNS server address from the variable $ns ". This utility prints some result to the console.
6. Output to the console text "----------"
7. Increasing $i by 1 to select the next line in the $name list

The example of the script knocks out the rut by the fact that it mixes not only two examples, but also a different syntax (for the .Net Framework, for the cmdlet, for the command line utility).

I hope that the answer will help to understand Powershell.