[Code] Powershell - a basic script for all servers

Just acquainting myself with Powershell - I've known about it, but have preferred using Cygwin's shell. However, I wanted to run some code against all servers, and this seemed a good time to try with Powershell.

I found this original script, which would run the same code against all servers in a list. (http://www.quicksqlserver.com/2009/01/powershell-sqlcmd-and-invoke-expression.html)

foreach ($svr in get-content "C:\MyInstances.txt"){
    $svr
    invoke-expression "SQLCMD -E -S $svr -i createMyuser.sql"
   
}

So then I adapted it - using SQLCMD /Lc to get a list of servers on the network, print the server name, then run SQLCMD against each server, running the c:\simplemodel.sql script (while you can run SQL inline, it kept parsing the @@ and choking on it). Not foolproof, mind you, but a good starting point.

foreach ($svr in (sqlcmd /Lc))
{
        $svr
        invoke-expression "SQLCMD -E -S $svr -i c:\simplemodel.sql"
}