Java执行shell命令的实现

ProcessBuilder pb = new ProcessBuilder("service","java-service","restart");
pb.redirectOutput(ProcessBuilder.Redirect.INHERIT);
pb.redirectError(ProcessBuilder.Redirect.INHERIT);
pb.redirectInput(ProcessBuilder.Redirect.INHERIT);
pb.start();

static ProcessBuilder.Redirect    DISCARD    
表示将丢弃子进程输出。
static ProcessBuilder.Redirect    INHERIT    
表示子进程I / O源或目标将与当前进程的相同。
static ProcessBuilder.Redirect    PIPE    
表示子进程I / O将通过管道连接到当前Java进程。

<dependency>
   <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.11.0</version>
</dependency>

public static String runAndResult(String cmd){
        StringBuilder sb = new StringBuilder();
        BufferedReader br = null;
        boolean execFlag = true;
        String uuid = UUID.randomUUID().toString().replace("-","");
        String tempFileName = "./temp" + uuid +".sh";
        try {
            String osName = System.getProperty("os.name").toUpperCase(Locale.ENGLISH);
            if (osName.matches("^(?i)LINUX.*$") || osName.contains("MAC")) {
                FileWriter execute_fw = new FileWriter(tempFileName);
                BufferedWriter execute_bw=new BufferedWriter(execute_fw);
                execute_bw.write(cmd + "\n");
                execute_bw.close();
                execute_fw.close();
                String command ="bash " + tempFileName;
                Process p = Runtime.getRuntime().exec(command);
                p.waitFor();
                br = new BufferedReader(new InputStreamReader(p.getInputStream()));
                String line;
                while ((line = br.readLine()) != null) {
                    sb.append(System.lineSeparator());
                    sb.append(line);
                }
                br.close();
                br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
                while ((line = br.readLine()) != null) {
                    sb.append(System.lineSeparator());
                    sb.append(line);
                    if (line.length() > 0){
                        execFlag = false;
                    }
                }
                br.close();
                if (execFlag){
                }else {
                    throw new RuntimeException(sb.toString());
                }
            }else {
                throw new RuntimeException("不支持的操作系统类型");
            }
        } catch (Exception e) {
            log.error("执行失败",e);
        }finally {
            if (br != null){
                try {
                    br.close();
                } catch (IOException e) {
                    log.error("io异常",e);
                }
            }
            FileUtils.deleteQuietly(new File(tempFileName));
        }
        return sb.toString();
    }