Java code operation executes linux/windows commands

Java code operation executes linux/windows commands

1. Modify the execution in the java code to determine whether it is a windows environment setting modification time

try{
			/**
			 * 获取操作系统的名称
			 * */
			String name = System.getProperty("os.name");
			if(name.contains("Windows")){	// Window 操作系统
				String cmd = " cmd /c time 19:50:00";
				Runtime.getRuntime().exec(cmd); // 修改时间
				cmd = " cmd /c date 2012-01-02";
				Runtime.getRuntime().exec(cmd); // 修改日期
			} else{     // 一般都是在linux 运行
				 String command = "sudo date -s " + formatDateStr;
                        Runtime.getRuntime().exec(command);
                        dataLog.info("change Date success");

                        command = "sudo date -s " + formatTimeStr;
                        Runtime.getRuntime().exec(command);
                        dataLog.info("change Time success");
			}
		}catch(Exception e){
			e.printStackTrace();

2. Generally, there is no return value if the Linux command is executed successfully. We can judge that there is no return value after receiving the processing, then the execution is successful.

**String command = "sudo mkdir /home/ww";   // 在home 下面创建文件夹
                    try {
                        InputStream rst = Runtime.getRuntime().exec(command).getInputStream();
                        dataLog.info("change IP Phase one");
                        byte[] rt = new byte[256];
                        len = rst.read(rt);
                        // linux 执行命令，正确时不会返回数据
                        if (len > 0) {
                            System.out.println("执行失败");
                        } else {
							System.out.println("执行成功");
                        }
                    } catch (Exception e) {
                        errorLog.error("change IP error !");
                    }**