var p = new Process("ls", ["-l"]); // run ls -l in current directory
        
trace("exitcode: " + p.exitCode());
        
trace("process id: " + p.getPid());
        
// read everything from stderr
var error = p.stderr.readAll().toString();
        
trace("stderr:\n" + error);
        
// read everything from stdout
var stdout = p.stdout.readAll().toString();
        
trace("stdout:\n" + stdout);

p.close(); // close the process I/O