Pass password to runas command?

Question

Is there any way to do this? I need to kick off a executable on a Windows 2000 system but I need to do it as Administrator. I was going to use the runas command, but apparently there is no parameter for password. Instead, it prompts for it. Is there any way to fill in a prompt after you run it?
I'm guessing the answer is no since once you start the program with a run process it's off doing it's own thing, but figured I'd ask.
Anyone have any other suggestions?
Thanks,
James

Answer 1

I don't know or have su.exe, so I can't say for sure. But generally speaking it is possible to start cmd.exe, then send commands to it, including "set". Like the following:    public static void main(String[] args) throws Exception {
        String c = "cmd.exe";
        System.out.println(c);
        Process p = Runtime.getRuntime().exec(c);
        PrintWriter writer = new PrintWriter(p.getOutputStream());
        BufferedReader in = new BufferedReader(
            new InputStreamReader(p.getInputStream()));
        Thread.currentThread().sleep(1000);
        writer.println("set foo=bar");
        writer.println("set");
        writer.flush();
        Thread.currentThread().sleep(1000);
        while (in.ready()) {
            System.out.println("From process: " + in.readLine());
        System.out.println("Process \'" + c + "\' finished");
    }This starts a new instance of command exe, sets the environment variable foo to be "bar" (only in the shell you just started, you don't have to explicitly null it out afterwards), and then lists the environment variables in that shell. However, it's not really bulletproof - I had to toy around with thread.sleep() to get the above to work as intended.
Another (and probably easier) way might be to have your java program write a small bat file with the required commands, execute it, and delete it again.