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Interpreter: An interpreter is a system software which translates high level language program into
                  l
                       machine code line by line.
                       Compiler: A compiler translates a program that is written in high level language into machine level
                  l
                       language in one go.
                  Utility Software

                  Utility Software is a set of small programs that supports the execution and operation of the Computer
                  system by doing additional works like scanning the hard disk to check the faulty sectors, virus scanning to
                  check the infected files, etc. For example: WinZip, antivirus software, file management tools, compression
                  tools, disk management tools, etc.
                  Utilities are neither completely system software nor application software. It is difficult to make a definite
                  list of utility software. But the most common types are disc and file management, Internet security and OS
                  customization tools. Such software are also used as specific tools while developing programs, etc.

                  Antivirus
                  An  antivirus  is  a  utility  software  that  helps  the  computer  to  be  free  from  virus.  Moreover,  it  notifies
                  when any program gets infected and contaminate other files. In addition, it also scans the computer and
                  provides protection against malware. It also scans the system in real time for any threats and eliminate
                  them. Examples of antivirus software are McAfee, Quick Heal, Avast, etc.

                  Compression Tools
                  An important aspect of a computer system is storage space which is limited to some extent so, it is
                  necessary to manage this storage space. Therefore, we can decrease the size of big data files by using
                  data compression tools. Examples of compression tools are WinZip, WinRAR, 7-Zip, etc.

                  Disk Management Tools
                  Disk management tools are used to manage data by performing some functions on drives of your system.
                  These functions are partitioning drives, manage drives, etc. Examples of disk  management tools  are
                  MiniTool Partition Wizard, Paragon Partition Manager, etc.
                  File System

                  Operating System facilitates for proper file system that helps to organize and obtain grouped information
                  or execution from a data storage device in a systematic manner, i.e., ‘File System’ is the basic structure and
                  concise format to arrange the set of information with their names.

                  There are different categories of File System. Some common file systems are FAT, NTFS, EXT, etc.



                    File System             Abbreviation                  Commonly used in Operating System

                   FAT             File Allocation Table            Used in Pen Drive, Flash Drive, 9X series of Windows


                   NTFS            New Technology File System       Microsoft Windows



                   EXT             Extended File System             Linux








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