java执行linux命令,该如何解决

public static void rumCommand(String cmd) {        Runtime runtime = Runtime.getRuntime();        int exitValue = 0;        try {            StringBuffer output = new StringBuffer();            StringBuffer err = new StringBuffer();            //logger.info("----runtime.exec start!----");            String[] cmdArray = { "/bin/sh", "-c", cmd };            logger.info("start");            Process proc = runtime.exec(cmdArray);            logger.info("end");            //logger.info("----runtime.exec end!----");            /*             * 系统需要通过提取某个命令的标准输出，来进行某项处理。例如，搜索/路径下的xml文件并对结果处理，如下： find / -name             * "*.xml" -type f | xargs java 相应程序             *              * 如果按照常规的方式，将以上的几个字串直接传递给Runtime.exec的参数，通过CommandExec的实现方法如下：             * CommandExec exec = new CommandExec(); Process process =             * exec.exec(new String(){"find", "/", "-name", "\"*.xml\"",             * "-type", "f", "|", "xargs", "java", "相应程序"});             */            Command sgStd = new Command(proc.getInputStream(),"STDOUT",output);            Command sgErr = new Command(proc.getErrorStream(),"ERROUT",err);            sgStd.start();            sgErr.start();            exitValue = proc.waitFor();            //logger.info("----rumCommand exitValue: " + exitValue);        } catch (Exception e) {            //e.printStackTrace();            logger.info(e);            runtime.exit(1);        }    }

String cmd1 = new String("cmd".getBytes("ISO-8859-1"),"UTF-8");        String cmd2 = new String("cmd".getBytes("ISO-8859-1"),"UTF-8");        String ss[] = {cmd1,cmd2};