title: Giving encoding error in nodeJS
body: <p>I am just trying some code on NodeJS, i am new to NodeJS. I have write following block of code.</p>
  
  <pre><code>var fs = require('fs'),
      os = require('os');
  
  var filename = 'Server.ini';
  var serverData = os.hostname() + "\n" + os.platform() + "\n" + os.type() + "\n";
  
  fs.existsSync(filename, function(exists) {
      if(exists) {
          console.log("1. " + filename + " file found. Server needs to be updated.")
  
          fs.unlinkSync(filename, function(error) {
              if(error) throw error;
              console.log("2. " + filename + " is been unlinked from server.");
          });
  
      } else {
          console.log("1. " + filename + " not found.");
          console.log("2. Server needs to be configured.");
      }
  });
  
  fs.openSync(filename, "w+", function(error) {
      if(error) throw error;
      console.log("3. " + filename + " file is been locked.");
  }); 
  
  fs.writeFileSync(filename, serverData, function(error) {
      if(error) throw error;
      console.log("4. " + filename + " is now updated.");
  
      fs.readFileSync(filename, 'utf-8', function(error, data) {
          if(error) throw error;
  
          console.log("5. Reading " + filename + " file");
          console.log("6. " + filename + " contents are below\n");
          console.log(data);
          console.log("-------THE END OF FILE-------");
      });
  });
  </code></pre>
  
  <p>I have edited the code and added sync but now its giving me following error:</p>
  
  <pre><code>D:\NodeJS\fs&gt;node eg5.js
  
  buffer.js:382
        throw new Error('Unknown encoding');
              ^
  Error: Unknown encoding
      at Buffer.write (buffer.js:382:13)
      at new Buffer (buffer.js:261:26)
      at Object.fs.writeFileSync (fs.js:758:12)
      at Object.&lt;anonymous&gt; (D:\NodeJS\fs\eg5.js:28:4)
      at Module._compile (module.js:449:26)
      at Object.Module._extensions..js (module.js:467:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:312:12)
      at Module.runMain (module.js:492:10)
      at process.startup.processNextTick.process._tickCallback (node.js:244:9)
  
  D:\NodeJS\fs&gt;
  </code></pre>
  
  <p>Is there anything wrong in my code regarding utf8 !</p>