Operating system or OS is complete operating systems that work on a desktop computer, notebook computer or mobile computing device. It include DOS, Windows, Windows Vista, Mac OS, Unix, and Linux.
Windows operating system, providing better performance, increased security and a simpler look.
Linux operating system is a popular multitasking UNIX-type operating system that is open source software, which means its code is available to the public. (source discovering computers).

 

Most of the operating systems include several built-in utility programs of file manager performs functions related to file and disk management.