Run Linux command with ProcessBuilder

This example show how to run Linux command in Android app with java.lang.ProcessBuilder.
remark: NOT all Linux commands supported.

Linux command in Android app
Linux command ls -s run in Android app

package com.example.androidruncommand;

import java.io.IOException;
import java.io.InputStream;

import android.os.Bundle;
import android.widget.TextView;
import android.app.Activity;

public class MainActivity extends Activity {

TextView prompt;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
prompt = (TextView)findViewById(R.id.prompt);

//String[] command = {"df", "-h", "/"};
//String[] command = {"df"};
//String[] command = {"ls"};
String[] command = {"ls", "-s"};

StringBuilder cmdReturn = new StringBuilder();

try {
ProcessBuilder processBuilder = new ProcessBuilder(command);
Process process = processBuilder.start();

InputStream inputStream = process.getInputStream();
int c;
while ((c = inputStream.read()) != -1) {
cmdReturn.append((char) c);
}

prompt.setText(cmdReturn.toString());

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold" />

<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >

<TextView
android:id="@+id/prompt"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</ScrollView>

</LinearLayout>

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