code: private static LinuxRelease parseLinuxOsReleaseFile(File file) {
          BufferedReader reader = null;
          try {
              reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "utf-8"));
  
              String id = null;
              String version = null;
              final Set<String> likeSet = new LinkedHashSet<String>();
              String line;
              while((line = reader.readLine()) != null) {
                  // Parse the ID line.
                  if (line.startsWith(LINUX_ID_PREFIX)) {
                      // Set the ID for this version.
                      id = normalizeOsReleaseValue(line.substring(LINUX_ID_PREFIX.length()));
  
                      // Also add the ID to the "like" set.
                      likeSet.add(id);
                      continue;
                  }
  
                  // Parse the VERSION_ID line.
                  if (line.startsWith(LINUX_VERSION_ID_PREFIX)) {
                      // Set the ID for this version.
                      version = normalizeOsReleaseValue(line.substring(LINUX_VERSION_ID_PREFIX.length()));
                      continue;
                  }
  
                  // Parse the ID_LIKE line.
                  if (line.startsWith(LINUX_ID_LIKE_PREFIX)) {
                      line = normalizeOsReleaseValue(line.substring(LINUX_ID_LIKE_PREFIX.length()));
  
                      // Split the line on any whitespace.
                      final String[] parts =  line.split("\\s+");
                      Collections.addAll(likeSet, parts);
                  }
              }
  
              if (id != null) {
                  return new LinuxRelease(id, version, likeSet);
              }
          } catch (IOException ignored) {
              // Just absorb. Don't treat failure to read /etc/os-release as an error.
          } finally {
              closeQuietly(reader);
          }
          return null;
      }
docs: Parses a file in the format of {@code /etc/os-release} and return a {@link LinuxRelease}
  based on the {@code ID}, {@code ID_LIKE}, and {@code VERSION_ID} entries.