private boolean isLinked(File file, List<File> list) {
		String s = file.getName();
		BufferedReader br = null;
		String line;
		for (File f : list) {
			if (!f.equals(file)) {
				try {
					br = new BufferedReader(new FileReader(f));
					line = br.readLine();
					while (line != null) {
						if (line.indexOf(s) != -1)
							return true;
						line = br.readLine();
					}
				}
				catch (IOException ioe) {
					ioe.printStackTrace();
				}
				finally {
					if (br != null) {
						try {
							br.close();
						}
						catch (IOException ioe) {
							ioe.printStackTrace();
						}
					}
				}
			}
		}
		return false;
	}