Android app how to run .sh file from /res/script.sh

Question

I have bash script in my Android Studio Project under /res/ directory. How can I run this file in my android app by Runtime.getRuntime().exec(path);?

Edit: All code

 try {
            Process process = Runtime.getRuntime().exec("bash -x raw/plik.sh");

            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            int read;
            char[] buffer = new char[4096];
            StringBuffer output = new StringBuffer();
            while ((read = reader.read(buffer)) > 0) {
                output.append(buffer, 0, read);
            }
            reader.close();

            Log.d("lab", "Stat: " + output);
        }catch (Exception e){
            Log.d("lab", e.getMessage());
        }

I dont have logs.

Answer 1

UPDATE: first solution only executes a list of commands in a file in /res/raw/. It's not a real solution.

Look at second part for a complete solution.

InputStream ins = getResources().openRawResource(
            getResources().getIdentifier("my_file_name_without_extension", "raw", getPackageName()));

        BufferedReader r = new BufferedReader(new InputStreamReader(ins));
        StringBuilder total = new StringBuilder();
        String line;
        try {
            while((line = r.readLine()) != null) {
                total.append(line);
                total.append(" ; ");
            }
            total.delete(total.length() - 3, total.length() -1); // Remove delimiter (;) at end
            r.close();
            ins.close();
        } catch(IOException e) {}

        try {
            Process proc = Runtime.getRuntime()
                .exec(new String[] {"sh", "-c", total.toString()});
            proc.waitFor();
        } catch (Exception ex) {
            ex.printStackTrace();
            Log.v("TAG", "exec failed");
        }

I tested the above code with a script file containing only the lines

cp /mnt/sdcard/Folder1/file /mnt/sdcard/Folder2/
cp /mnt/sdcard/Folder1/file1 /mnt/sdcard/Folder2/

in res/raw.

You'll have to remove the shebang and any empty line from your script. Also, I believe you'll have to include each command in a single line, i.e. you can't have a command spread over multiple lines. Or you could just edit the string building part to suit your particular case.

COMPLETE SOLUTION WITH ROOT ACCESS

InputStream is =  getResources().openRawResource(getResources().getIdentifier("script_name_without_extension", "raw", getPackageName()));
boolean copysuccess = false;
// Copy from /res/raw/script.sh to /data/data/com.mycompany.myapp/files/script.sh
// because we need to chmod the script
File file = new File(getFilesDir(), "script.sh");
String scriptPath = file.getAbsolutePath();
if(!file.exists()) {
    try {
        OutputStream output = new FileOutputStream(file);
        byte[] buffer = new byte[4*1024];
        int read;
        while((read = is.read(buffer))!=-1){
            output.write(buffer,0, read);
        }
        copysuccess = true;
        output.flush();
        output.close();
        is.close();
    } catch(Exception e) {
        copysuccess = false;
        // TODO perform cleanup
    }

    // perform chmod now
    if(copysuccess) {
        try {
            Process proc = Runtime.getRuntime()
                .exec(new String[] {"su", "-c", "chmod 755 "+ scriptPath});
            proc.waitFor();
        } catch (Exception e) {
        }
    }
}

// Execute the script now
try {
    Process proc = Runtime.getRuntime()
        .exec(new String[] {scriptPath});
        proc.waitFor();
    } catch (Exception e) {
}

Answer 2

First I think better place for bash scrip is a /raw directory.

But even raw directory can be wrong because I'm not sure if your app will have a access to this dir - should have but I'm not sure.

Next usefull command is: bash -x raw/script.sh