Java Code

import java.io.*;
/**Reads from a file, outputted by bash script
 * 
 * @author jordyjdb
 *
 */
public class Reader {

	public static void main(String[] args) {
		// file directory
		String fileName = "C:\\Users\\jordyjdb\\mapped.txt";
		// Line of file
		String line = null;
		// sets array to hold the lines form the text document
		String[] Lines = new String[512];

		try {
			int count = 0;

			// creates file reader
			FileReader fileReader = new FileReader(fileName);
			BufferedReader bufferedReader = new BufferedReader(fileReader);

			int n = 0;

			// loops untill end of file
			while ((line = bufferedReader.readLine()) != null) {
				// System.out.println(line);
				Lines[n] = line;
				// moves to next position in array
				n++;
				// keeps track of how many lines in the file
				count++;
			}
			bufferedReader.close();
			// creates file writer
			FileWriter fileWriter = new FileWriter(fileName);
			BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

			// creates temp lines to split code into
			String[] tempLine1 = new String[2];
			String[] tempLine2 = new String[2];

			// loops for every line that is a file
			String[] Sum = Lines[0].split("	", 2);
			n = 1;
			// T = total size of directory
			int T = Integer.parseInt(Sum[0]);
			// 20 hashes used
			int i = T / 30;

			while (n < (count)) {

				// first split to get the file name from line
				tempLine1 = Lines[n].split("/", 2);
				// tempLine1[1] = file name

				// second split to get the size of the file
				tempLine2 = tempLine1[0].split("	", 2);
				// tempLine2[0] = file size

				String HashString = "";
				// h = amount of hashes for a folder
				int h = (int) Math.round((Integer.parseInt(tempLine2[0]) / i) - 0.5);
				for (int H = 0; H < h; H++) {
					HashString += "#";
					
				}
				
				// writes back to file
				bufferedWriter.write(tempLine2[0] + " MB\t [" + HashString
						+ "\t] " + tempLine1[1]);
				bufferedWriter.newLine();
				n++;
			}

			// Always close files.
			bufferedWriter.close();
		} catch (FileNotFoundException e) {
			System.out.println("File not found.");
		} catch (IOException ex) {
			System.out.println("Error reading file.");
		}

	}

}