如何在Mac中运行终端命令并通过java打印输出

Question

我尝试使用下面的代码来获取ran命令的输出。但它打印空了。

String cmd = "/bin/bash device_id -l";
Process process = Runtime.getRuntime.exec(cmd);
BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
    System.out.println(line);
}
reader.close();

有谁可以帮助我。我必须得到连接的iDevice UDID。

Answer 1

使用以下代码，我可以获得连接的设备udid。

public String deviceUDID() throws IOException{
        ProcessBuilder builder = new ProcessBuilder("/bin/bash", "-c", "/usr/local/bin/idevice_id -l");
        builder.redirectErrorStream(true);
        Process p = builder.start();
        BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String line;
        line = r.readLine();
        System.out.println(line);
        return line;
    }