运行 bash 来自 Processing 的脚本

Question

我有一个名为 lightmeter.sh 的 bash 脚本，creates/overwrites 一个名为 lightstuff.txt 的文本文档。这是相关代码：

#!/bin/bash          
      gphoto2 --get-config=lightmeter 1> lightstuff.txt

我已经开始编写处理脚本来执行 bash 脚本：

    void setup() {


       String[] args = {"sh","","/Users/lorenzimmer/Documents/RC/Camera_control/first_scripts/lightmeter.sh"};
exec(args); 
}

当我运行脚本不执行程序时，或者它不会像我从终端运行时那样更新文本文件。我做错了什么？

谢谢，

洛伦

Answer 1

这是我如何运行 Bash 脚本处理 (a more complete version is here) 的示例：

// required imports that aren't loaded by default
import java.io.BufferedReader;
import java.io.InputStreamReader;

void setup() {
  String commandToRun = "./yourBashScript.sh";

  // where to do it - should be full path
  File workingDir = new File(sketchPath(""));

  // run the script!
  String returnedValues;
  try {
    Process p = Runtime.getRuntime().exec(commandToRun, null, workingDir);
    int i = p.waitFor();
    if (i == 0) {
      BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
      while ( (returnedValues = stdInput.readLine ()) != null) {
        println(returnedValues);
      }
    }

    // if there are any error messages but we can still get an output, they print here
    else {
      BufferedReader stdErr = new BufferedReader(new InputStreamReader(p.getErrorStream()));
      while ( (returnedValues = stdErr.readLine ()) != null) {
        println(returnedValues);
      }
    }
  }

  // if there is any other error, let us know
  catch (Exception e) {
    println("Error running command!");
    println(e);
    // e.printStackTrace(); // a more verbose debug, if needed
  }
}

运行 bash 来自 Processing 的脚本

Running bash script from Processing

bash

processing