Enable or Disable Displaying File Extension For Files In Windows
By default, Windows Explorer hides file extension of files. This behaviour is hazardous, and can potentially cause you to double-click on file like "virus.jpg", thinking that it is just a picture, when it is actually a program "virus.jpg.exe" which you would never have clicked had you really known the file extension.

With this batch script displaying file extension for files can be either enabled or disabled.

Please double click the batch script, type Y letter to display file extension for files.

Please double click the batch script, type N letter to disable displaying file extension for files.