【JAVA代码】java执行shell命令

public class ExecShell {
    public static final Logger logger = LoggerFactory.getLogger(ExecShell.class);

    public static Object exec(String cmd) {
        try {
            String[] cmdA = {"/bin/sh", "-c", cmd};
            Process process = Runtime.getRuntime().exec(cmdA);
            LineNumberReader br = new LineNumberReader(new InputStreamReader(
                    process.getInputStream()));
            StringBuffer sb = new StringBuffer();
            String line;
            int i = 0;
            while ((line = br.readLine()) != null) {
                if (i > 0) {
                    sb.append("\n");
                }
                sb.append(line);
                i++;
            }
            logger.info("cmd:" + cmd + ",result:" + sb.toString());
            return sb.toString();
        } catch (Exception e) {
            logger.error("exec error", e);
        }
        return null;
    }
}