Java SE (Java Platform, Standard Edition)

Hi,

i am trying to execute a command in a cygwin-bash.

the java code is:

import java.io.*;

public class cmd {
	public static void execute(String cmd_array[]) {
		execute(cmd_array, null);
	}
	public static void execute(String cmd_array[], String work_directory) {
		try {
			ProcessBuilder pb = new ProcessBuilder(cmd_array);
			if(work_directory != null) {
				pb.directory(new File(work_directory));
			}
			Process process = pb.start();

			String line;

			System.out.println("Here is the standard output of the command:\n");
			BufferedReader stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
			while ((line = stdInput.readLine()) != null) {
				System.out.println(line);
			}

			System.out.println("Here is the error output of the command:\n");
			BufferedReader stdError = new BufferedReader(new InputStreamReader(process.getErrorStream()));
			while ((line = stdError.readLine()) != null) {
				System.out.println(line);
			}
			process.waitFor();
			System.out.println(process.exitValue());
		} catch(IOException e) {
			e.printStackTrace();
		} catch(InterruptedException e) {
			e.printStackTrace();
		}
	}
}

the following is working:

String[] cmd_array = new String[2];
cmd_array[0] = "C:/Program Files/System/Cygwin/bin/bash.exe";
cmd_array[1] = "--version";
cmd.execute(cmd_array,"C:/Program Files/System/Cygwin/bin");

this does not work:

String[] cmd_array = new String[3];
cmd_array[0] = "C:/Program Files/System/Cygwin/bin/bash.exe";
cmd_array[2] = "--login";
cmd_array[2] = "-c 'ls'";
cmd.execute(cmd_array,"C:/Program Files/System/Cygwin/bin");

i get the following output:

Here is the standard output of the command:

Here is the error output of the command:

/usr/bin/bash: - : invalid option
Usage:  /usr/bin/bash [GNU long option] [option] ...
        /usr/bin/bash [GNU long option] [option] script-file ...
GNU long options:
        --debug
        --debugger
        --dump-po-strings
        --dump-strings
        --help
        --init-file
        --login
        --noediting
        --noprofile
        --norc
        --posix
        --protected
        --rcfile
        --restricted
        --verbose
        --version
        --wordexp
Shell options:
        -irsD or -c command or -O shopt_option          (invocation only)
        -abefhkmnptuvxBCHP or -o option

It seems as if the argument --login is not passed correctly.

Thanks for any help.
Robert